There are different types of fitness—exercise expert explains

MedicalXpress | мая 30, 2026

You probably have at least one "super fit" friend. Maybe they're a marathon runner, a footy player or a keen hiker. To keep themselves healthy, they may stick to a strict exercise regimen and only eat certain foods. But in most cases, these people would likely struggle to play a sport or do an activity they're unaccustomed to.