8 Best Workouts To Do In Under 10 Minutes. Short workouts are perfect for when you're new to working out or when you're just feeling lazy. It's better to take baby steps than no steps at all. Plus, it takes 21 days to form a new habit. These workouts focus on every major problem area so you can alternate between them however you want. - Tap the pin if you love super heroes too! Cause guess what? you will LOVE these super hero fitness shirts!