The IPHY department is seeking 18-30 year-old volunteers who are sedentary (no regular exercise) for a paid research study on muscle adaptations to exercise. Additional screening questions will be asked upon inquiry. The study will involve leg exercise, muscle biopsies, blood samples, and strength and soreness measurements. The study will require ~6 hours total, spread across 3 appointments within a month. You will be paid $120 for study completion.