Who doesn't LOVE burpees? This is such a great body weight exercise that can be modified in so many ways. You can also add dumbbells, ankle weights, and/or even a weighted vest to increase the intensity.
30 Day Plank Challenge - Benefits of Plank Exercise: *It strengthens your lower back. *It develops your core muscles – which include the abs, back, hips and the butt. *Helps you to avoid injuries and encourage good posture.