You have done the training. You have mapped the route. You have packed the kit. And yet, the first 20 minutes of every hard session feel like running through wet sand. The legs are heavy and the breathing is rough. The pace you planned feels two notches too fast.
This is not a fitness problem. It is a preparation problem. The 60 minutes before a hard training session or race is where most endurance athletes leave performance on the table, because they treat it as a buffer for getting changed instead of as the window where the body actually shifts into working state. The fix is not complicated, it is a sequence: nutrition timed correctly, hydration in measurable volumes, a warm-up structured to the session, brief nervous system priming, and the supplement window used properly. Here is the complete 60-minute pre-session protocol, by the minute.
What happens to your body in the 60 minutes before exercise?
In the hour before a hard session, your body is already adjusting. Liver glycogen is being mobilised. Cortisol is rising as part of a normal anticipatory response. Blood flow is starting to redirect from your gut toward your skeletal muscles. The nervous system is shifting from parasympathetic dominance to sympathetic activation. The 60-minute window is when you either support these shifts or work against them.
Liver glycogen is the first lever. Overnight, your liver glycogen drops by roughly 50 to 80% depending on your last meal, according to data summarised by the Australian Institute of Sport. This is why even athletes who carb-loaded the night before can feel flat in the morning: muscle glycogen is intact, but the liver, which buffers blood sugar during exercise, is partially depleted. A small carbohydrate intake 60 to 90 minutes before exercise restores that buffer.
Cortisol is the second factor. Cortisol rises naturally before exercise and is part of why you feel "switched on" at the start line. This is not a problem unless you push the response into anxiety territory. Sympathetic overdrive (racing heart, shallow breathing, tight muscles before you have moved) reduces blood flow to the muscles you need, sends it to the periphery, and burns through energy you have not yet started using. Your job in the 60-minute window is to support activation without tipping into stress.
Blood flow redistribution is the third. At rest, roughly 20% of your cardiac output goes to skeletal muscle. During hard exercise, that rises to 80% or more. The transition is not instant. Warm-up speeds it. A proper warm-up redirects blood flow, raises muscle temperature, and primes the cardiovascular system so the first ten minutes of your session feels like the second twenty. For the underlying cellular machinery this supports, read the Mitochondria Guide.
What should you eat 60 minutes before a hard training session?
In the 60 minutes before a hard session, eat 30 to 60 grams of easily digestible carbohydrate, with minimal fat and minimal fibre. The goal is to top up liver glycogen and stabilise blood sugar without slowing digestion. A banana with honey, two slices of white toast with jam, a small bowl of oatmeal with banana, or a sports drink all hit this target.
The International Society of Sports Nutrition position stand on nutrient timing, recommends 1 to 4 grams of carbohydrate per kilogram of body weight in the hours before exercise, with the timing scaled to the size of the meal. The closer to the session, the smaller the meal and the simpler the carbohydrates. For an athlete weighing 70 kg eating 60 minutes out, that is roughly 60 to 100 g of carbohydrates, on the lower end if your stomach is sensitive.
Avoid three things in the 60-minute window:
- High-fat foods (full-fat dairy, peanut butter in volume, fried items): fat slows gastric emptying and leaves food sitting in the stomach when you start moving.
- High-fibre foods (raw vegetables, beans, whole grains in volume): fibre is excellent the night before, not the hour before.
- Foods you have not tested in training: race-week nutrition is not the time to discover a new bar gives you cramps.
For sessions under 60 minutes at moderate intensity, you can often skip the pre-session meal entirely without performance loss. For sessions over 90 minutes, or any race effort, the pre-session feed becomes non-negotiable. The shorter and lower the intensity, the more flexibility you have.
How much should you drink before training?
Start the 60-minute window in a hydrated state, not racing to catch up. The American College of Sports Medicine recommends 5 to 7 ml of fluid per kilogram of body weight at least 4 hours before exercise, with another 3 to 5 ml per kg roughly 2 hours before if urine is dark or volume is low. For a 70 kg athlete, that is 350 to 490 ml four hours out, and another 210 to 350 ml two hours out.
In the final 60 minutes, the goal is to maintain hydration without overloading the bladder. Sip 200 to 300 ml of fluid in the 30 to 45 minutes before the session starts, then stop. Drinking another 500 ml in the final 15 minutes leaves you needing a bathroom break in the first kilometre, or worse, mid-effort.
Sodium matters more than most athletes realise. Adding 200 to 400 mg of sodium to your pre-session fluid (a pinch of salt in water, or an electrolyte drink) improves fluid retention by reducing how much you urinate out before you start moving. This is especially relevant for athletes who sweat heavily, race in heat, or train fasted.
A practical urine check works as well as any formula: pale straw colour by 30 minutes before the session means you are ready. Dark amber means you have under-hydrated and should sip extra, slowly. Clear and copious means you have over-hydrated and your sodium is now diluted.
Does warming up actually improve performance?
Yes! A 2015 review in Sports Medicine, looking across cyclic endurance activities including running, cycling, and swimming, found consistent performance benefits from a well-structured warm-up. The mechanisms are physical (raised muscle temperature, faster nerve conduction, improved oxygen kinetics) and psychological (rehearsing the movement, reducing the gap between standing still and racing).
The structure of the warm-up should match the demands of the session. Three patterns cover most endurance training:
Easy run or easy ride (60 to 90 minutes at conversational pace): A 3 to 5 minute walk or very easy spin is enough. Your warm-up is the first 10 minutes of the session itself, started slightly slower than target. No drills required.
Intervals or threshold session: 10 to 15 minutes of easy aerobic work, followed by 4 to 6 progressive strides or short accelerations to working pace. The goal is to reach the first hard interval already in working state, not to use it as your warm-up.
Race effort (5 km up to half marathon, or any racing format): 15 to 25 minutes of warm-up. Start with easy aerobic work, then add drills (high knees, butt kicks, leg swings) and 6 to 8 strides building to slightly above target race pace. The longer the race, the less intense the warm-up. For a marathon or longer, a brief 5 to 10 minute jog is enough.
The biggest warm-up mistake at amateur level is starting too easy and finishing too long before the session. A warm-up that ends 15 minutes before the gun has already cooled down. Aim to finish your warm-up within 5 to 10 minutes of the start.
How do you prime your nervous system before a hard session?
Nervous system priming is not visualisation pseudoscience. It is a brief, repeatable routine that shifts your autonomic state from anxious to activated. Three minutes of structured breathing plus a short physical activation drill is usually enough. Done consistently, this becomes a cue that tells your body the work is about to start.
Tactical breathing is the simplest tool. The pattern is 4 seconds inhale through the nose, 4 seconds hold, 4 seconds exhale through the mouth, 4 seconds hold. Run this for 6 to 8 cycles in the 5 minutes before your warm-up starts. The slow exhale activates the vagus nerve, which lowers heart rate and brings the sympathetic nervous system back to a productive level of arousal rather than panic.
Physical activation drills are the second tool. After your tactical breathing, add 30 seconds of light dynamic movement: arm swings, hip circles, leg swings, a few high-knee skips. The goal is not to fatigue you. The goal is to bridge from stillness into movement and signal to the nervous system that the work is starting.
What to avoid: long visualisations, loud music if it spikes your heart rate, scrolling on a phone in the final 15 minutes, conversations with anyone who is making you doubt the plan. The 60-minute window is not the time to absorb new information. It is the time to execute a known routine.
When should you take a pre-workout supplement?
Take pre-workout supplements 45 to 60 minutes before exercise. This is the window in which caffeine absorption peaks, nitric oxide precursors like L-citrulline have converted into their active form, and supporting compounds are in circulation. Taking a supplement 10 minutes before the gun is too late for most active ingredients. Taking one 2 hours before is too early.
Caffeine is the best-studied pre-workout compound for endurance. The International Society of Sports Nutrition position stand on caffeine, identifies an ergogenic range of 3 to 6 mg per kg of body weight, taken 45 to 60 minutes before exercise. For a 70 kg athlete, that is 210 to 420 mg. Most endurance athletes do well at the lower end of this range, especially over sessions lasting hours, where high doses cause GI distress and sleep disruption.
L-citrulline supports nitric oxide production, which dilates blood vessels and improves oxygen delivery to working muscle. Research published in the Journal of the International Society of Sports Nutrition, found that oral L-citrulline supplementation improved cycling time trial performance and reduced muscle fatigue ratings in trained men.
The OLEUS Pre-Activity Shot was designed for this window. It combines Oleuropein from olive leaf extract (mitochondrial support), L-citrulline (blood flow), Acetyl-L-carnitine (fat oxidation), Caffeine from guarana (gentle activation from a natural source), Magnesium, a full B-vitamin complex (enzymatic cofactors), and Vitamin C from Acerola (antioxidant support). The full label and per-ingredient research is broken down in the Pre-Activity Shot ingredients article.
The 60-minute window is not where you build fitness. It is where you decide whether the fitness you already have shows up. We formulated the Pre-Activity Shot to fit inside this window precisely, because the timing matters as much as the ingredients.
OLEUS Performance Lab
What does the complete 60-minute pre-session protocol look like?
The protocol below applies to a hard training session or a race effort. For easy runs or easy rides, compress the entire sequence into 20 to 30 minutes and drop the formal warm-up. The principles are the same. The intensity of the preparation matches the intensity of the session.
| Time | What you do | Why it matters |
|---|---|---|
| 60 minutes out | Eat 30 to 60 g of easy carbohydrate. Take the Pre-Activity Shot. Drink 200 to 300 ml of fluid with a pinch of salt. | Carbs top up liver glycogen. Supplement compounds reach peak plasma levels by the start. Hydration is loaded without bladder pressure. |
| 45 minutes out | Kit on. Bathroom break. Light walking or easy mobility. Start tactical breathing. | Reduces standing-still time. Begins the transition from rest into activation. |
| 30 minutes out | Final bathroom break. Begin general warm-up: 5 to 10 minutes of easy aerobic work (jog, spin, light swim). | Raises muscle temperature and starts the cardiovascular shift. Blood flow begins redirecting to working muscles. |
| 15 minutes out | Specific warm-up: drills, 4 to 6 strides at target pace, 30 seconds of activation work. Final tactical breathing cycle. | Rehearses the movement pattern. Brings the nervous system to the start in activated, not anxious, state. |
| 5 to 10 minutes out | Find your spot at the start. Stay loose. Avoid new information. | Protects the routine you have just executed. Stops anxiety from re-spiking. |
| Go | First 5 minutes slightly under target pace. Build into rhythm by minute 10. | Prevents the early surge that creates a lactate spike you carry for the rest of the session. |
Three principles run through this countdown. First, every minute has a purpose. There is no dead time. Second, intensity rises gradually: nutrition and hydration first, then movement, then activation, then performance. Third, nothing in the routine is new. The 60-minute window is for executing a protocol you have already trained, not for trying something for the first time.
What does the research show about pre-session preparation?
The performance impact of pre-session preparation has been measured across cycling, running, swimming, and triathlon. The pattern is consistent: athletes who execute a structured pre-session protocol perform better in the first 20 minutes than athletes who do not, and the gap does not close over the rest of the effort.
The OLEUS Pre-Activity Shot was evaluated in a placebo-controlled trial with 28 cyclists from a Switzerland-based World Tour professional cycling team, taken in the pre-activity window across a multi-day endurance test. The riders taking the formula showed +25% sustained power output over the test period compared to the placebo group. This is one component of a complete pre-session protocol, not a substitute for the rest of it. Nutrition, hydration, warm-up, and nervous system priming still matter. The supplement supports them; it does not replace them.
Frequently asked questions
1. What if I do not have 60 minutes before my session?
Compress the sequence. With 30 minutes, do a short carb intake plus the Pre-Activity Shot at the 30-minute mark, drink 200 ml of fluid, then move into a 10 to 15 minute warm-up. With 15 minutes, prioritise the warm-up and a small carb hit, and accept that you are starting the session in less than ideal state. The shorter the window, the more important the warm-up becomes.
2. What should I eat before a fasted morning run?
For easy fasted runs under 60 minutes, nothing is fine. Take the Pre-Activity Shot if you have one (the carbohydrate content gives you a small fuel base without breaking the spirit of fasted training), drink 200 ml of water, and head out. For any hard session or run over 75 minutes, eat something. Fasted intervals are a high-cost, low-return decision.
3. Can I take the Pre-Activity Shot with coffee?
You can, but you do not need to. The 80 mg of caffeine in the shot is roughly equivalent to a small espresso. Stacking with coffee can push total intake into the 200 to 300 mg range, which is fine for most athletes but worth knowing.
4. Does the warm-up really matter for an easy run?
Less than for a hard session. For conversational pace runs, the first 10 minutes of the run itself can serve as the warm-up, started slightly slower than target. The formal warm-up matters most when the session has a high-intensity component you need to reach in working state.
5. How do I build a pre-session protocol I can stick to?
Write it down. Practice it in training, not just in races. The athletes who execute well on race day are the ones who have done the same routine before every hard session for months. Race week is too late to design the protocol. The 60-minute window is a habit, not a one-off.
The bottom line
Sixty minutes. Six steps. One protocol. Eat, hydrate, take the shot, warm up, prime, and start at the pace you trained for. The first 20 minutes of your session is decided in the hour before you start. Build the routine, run it every time, and the work you have already put in shows up when it counts.
Sources
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Kerksick, C.M., Arent, S., Schoenfeld, B.J., Stout, J.R., Campbell, B., Wilborn, C.D., Taylor, L., Kalman, D., Smith-Ryan, A.E., Kreider, R.B., Willoughby, D., Arciero, P.J., VanDusseldorp, T.A., Ormsbee, M.J., Wildman, R., Greenwood, M., Ziegenfuss, T.N., Aragon, A.A., Antonio, J. (2017). International society of sports nutrition position stand: nutrient timing. Journal of the International Society of Sports Nutrition, 14, 33.
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Sawka, M.N., Burke, L.M., Eichner, E.R., Maughan, R.J., Montain, S.J., Stachenfeld, N.S. (2007). American College of Sports Medicine position stand. Exercise and fluid replacement. Medicine & Science in Sports & Exercise, 39(2), 377-390.
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McGowan, C.J., Pyne, D.B., Thompson, K.G., Rattray, B. (2015). Warm-up strategies for sport and exercise: mechanisms and applications. Sports Medicine, 45(11), 1523-1546.
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Goldstein, E.R., Ziegenfuss, T., Kalman, D., Kreider, R., Campbell, B., Wilborn, C., Taylor, L., Willoughby, D., Stout, J., Graves, B.S., Wildman, R., Ivy, J.L., Spano, M., Smith, A.E., Antonio, J. (2010). International Society of Sports Nutrition position stand: caffeine and performance. Journal of the International Society of Sports Nutrition, 7(1), 5.
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Suzuki, T., Morita, M., Kobayashi, Y., Kamimura, A. (2016). Oral L-citrulline supplementation enhances cycling time trial performance in healthy trained men. Journal of the International Society of Sports Nutrition, 13, 6.
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Jeukendrup, A.E. (2014). A step towards personalized sports nutrition: carbohydrate intake during exercise. Sports Medicine, 44(Suppl 1), S25-S33.
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OLEUS placebo-controlled trial, 28 cyclists, Switzerland-based World Tour team, multi-day endurance protocol. Data on file, OLEUS Performance Lab.
