GLOSSARY

Pre-Sleep Protein Reference Table

Pre-sleep casein has been studied as a way to increase overnight amino-acid availability; it is optional within the daily protein plan.

Pre-Sleep Protein supplies protein before sleep or supports overnight recovery, potentially helping meet daily needs without making a bedtime supplement mandatory.

Sleep supports recovery and cannot be replaced by a nutrient or drink. Protein consumed before sleep can provide amino acids overnight and may be useful when it helps meet the athlete's daily needs. Evidence from particular training studies does not establish that everyone needs a bedtime supplement or that casein is mandatory. Consider the evening meal, total protein, gastrointestinal comfort and sleep quality. Late caffeine, very large meals or excessive drinking can interfere with the recovery goal.

Muscle protein synthesis builds proteins, while breakdown removes them; net balance reflects the difference over an interval. Feeding essential amino acids and resistance exercise can stimulate synthesis, but a short-term synthesis measurement is not identical to a long-term gain in muscle size. Adequate daily protein, energy and repeated training are central. Protein distribution creates repeated feeding opportunities, and the useful amount per meal depends on body size, age, food quality and the exercise performed.

For example, review the evening meal before adding a bedtime protein snack. If a snack helps complete the day's intake and is comfortable, it can fit the plan. It should still allow good sleep; neither a late stimulant-containing recovery drink nor an oversized meal serves recovery simply because it contains protein.