Research Study Participation

• Male and female adults (18-35 years of age).
• Are physically active (≥150 minutes per week of physical activity plus muscle-strengthening activities on 2 or more days)
• Willing to follow all pre-visit restrictions (no caffeine within 12 hours, no alcohol within 24 hours, no strenuous exercise within 24 hours, no food within 3 hours, at least 6 hours of sleep the night before and arrive well hydrated).
• Not pregnant, not breastfeeding, and not actively trying to become pregnant during study participation, based on self-report.

We invite you to take part in a research study because you are a male runner between the ages of 18 and 40 who has been running at least 4 times per week for the past 3 years and has a recent 5 km personal best under 20 minutes. You must also be:

• Free from injury and able to safely complete treadmill running
• Willing to follow all pre visit restrictions (no caffeine within 24 hours, no strenuous exercise within 24 hours, no food within 3 hours)