The central hypothesis will be tested in 10 healthy young adults (20-35 yr). The subjects will be studied in the post-absorptive state on two different days, during which they will randomly assigned to drink a WPH or WHEY mixture. The WPH group will receive a 0.08 gram/kg dose of WPH. The WHEY group will receive a 0.08 gram/kg dose of an intact whey protein mixture.