You've honed your body to peak physical condition, making you an extraordinary athlete with capabilities beyond the norm. You gain the following benefits:

• Your movement speed increases by 10 feet when you are not wearing heavy armor.
• You can perform a standing high jump or long jump as if you had a running start, covering a distance up to your maximum jumping capability as calculated by your Strength score.
• You gain proficiency in the Athletics skill if you don't already have it. If you are already proficient, you can add double your proficiency bonus to checks made with this skill when climbing, swimming, or jumping.
• Once per short rest, you can use your action to perform a burst of athletic prowess. For one minute, you gain advantage on Strength (Athletics) checks, and you don't suffer exhaustion due to forced marches or strenuous physical activity.

This feat turns your character into a true athlete, excelling in speed, agility, and stamina, and allowing you to perform athletic feats that would challenge even the most skilled competitors. Whether it's sprinting, leaping across gaps, or enduring a marathon, you're the one to beat.