Nutrition Intervention to Promote Immune Recovery From Sleep Restriction

During SR+, participants will consume a multi-nutrient beverage and additional protein (\~1.5 grams·kg-1 body weight·day-1 versus the lower end of MDRI of \~0.9 grams·kg-1 body weight·day-1) during and after the period of sleep restriction. The multi-nutrient beverage contains arginine, glutamine, vits C \& D, zinc and omega-3 fatty acids (DHA and EPA).

The placebo beverage (NS and SR) will be composed of a commercially-available artificially sweetened (e.g., containing aspartame, splenda or another artificial sweetener) beverage powder base and grapefruit extract (i.e., naringen) and/or quinine (i.e., a common ingredient found in tonic water).