Training days

A supplement brand writing about training has one honest obligation: to rank its own ingredients below the things that actually move performance. Here is that ranking.

01The honest ranking

Caffeine is the best evidenced legal performance aid in existence. The International Society of Sports Nutrition's position stand puts the effective range at 3 to 6 mg per kilogram of body weight, taken around 60 minutes before exercise, with benefits across endurance, strength and power.¹ The second lever is sleep: when college basketball players extended sleep toward ten hours for several weeks, sprint times fell and shooting accuracy rose by around nine percent, an uncontrolled study but a large signal.² The biggest levers are behavioural; the system's job is everything around them.

02What the botanicals actually show

Read against that standard, the formulation's training relevant ingredients sort honestly. Ashwagandha has the strongest case: a meta-analysis found likely improvements in strength, VO2max, fatigue and recovery, in trials mostly at 300 to 600 mg of root extract, a range this formulation's evening 300 mg sits inside.³ Rhodiola shows small pooled improvements in endurance markers, but the largest effects cluster at daily doses above 600 mg, several times the 133 mg standardised dose here, which is dosed for its stress and fatigue evidence, not as an ergogenic.⁴ Cordyceps shows signals on VO2peak and ventilatory threshold in a 2025 meta-analysis, with trials at 2 to 3 grams a day against 300 mg here, and with most included studies favourable enough to warrant a publication bias caveat.⁵ Its place here is the daytime layer's continuity job, not a race day boost. And tyrosine helps cognition under load, not the legs: it supports decision making when stress is depleting catecholamines, while attempts to show direct exercise performance gains have largely failed to replicate.⁶⁷ Magnesium is the quiet exception: it carries authorised EU claims for normal muscle function and the reduction of tiredness and fatigue, which is exactly the register it earns.

03The day, structured

The structure follows the evidence. Caffeine early, sized to body weight, timed so the cutoff arithmetic from the caffeine protocol still holds; LAYER ONE with it, since tyrosine's job is the head under load. Train where the day allows; the mid afternoon dip is a real but workable window, covered in the crash protocol. Then protect the part that pays: the evening. LAYER THREE, the wind-down, and a bedtime that lets sleep do the adaptation is where the session becomes progress.

04What this system is not

05The research horizon

The training-and-sleep question got its biggest dataset ever in 2025: 4 million person-nights of wearable data across 14,689 people, published in Nature Communications. The finding refines the old advice usefully: exercise ending four or more hours before sleep did not disturb it at all, while high-strain sessions inside that window delayed sleep onset by up to 80 minutes and cut duration by around 43 minutes.⁸ The rule is intensity times proximity, not a curfew on evening training, and the protocol's scheduling guidance reads exactly that way. The other direction of the loop is equally quantified now: a 2024 meta-analysis of 27 studies confirmed that lost sleep measurably degrades next-day athletic performance, with late-night partial deprivation the most damaging pattern.⁹ Training loads the system, sleep pays the loan, and the data on both sides of that sentence keeps getting bigger. Structure the day around it and the loop compounds in your favour.

06Where the layers sit

How we handle evidence. This page ranks the brand's own ingredients below caffeine and sleep because that is what the literature shows, and it names where studied doses exceed the formulation's. Educational content, not medical advice.