Strengthen Your Core in 5 Minutes with This No-Equipment Calisthenics ... Mountain Climbers A dynamic exercise that combines core work with cardio. How to do it: In a high plank position, bring ...

This 7-day treadmill plan combines walking, jogging, sprints, and incline workouts for fat loss and endurance.

It’s the 15-15-15 workout, and it will give you a good 45-minute cardio session even if you cannot stand doing anything for 45 minutes straight. I’ve often done a version of this when I’m at ...