Top 15 At-Home Exercises to Lose Weight and Build Muscle

12. CrossFit

CrossFit. This exercise can be used at home without any heavy equipment. Here is the most simple core workout set: Complete five rounds for 10 sit-ups, five lunges, and a plank hold for 45 seconds, with five push-ups, followed by a one-minute break to do all of the exercise rounds again. It serves as a very effective exercise regimen for improving endurance and strengthening core muscles.