40-Minute Do-Anywhere Bodyweight Circuit

Reps: 5, each side

• Begin in plank with your knees on the mat.
• Extend your right leg straight behind you so it's parallel with the floor. Engage your abs, and keep your left heel in line with your hips by engaging your glutes.
• With your right leg extended, exhale to bend the elbows, lowering into a push-up. Inhale to straighten your arms, keeping your leg lifted.
• This counts as one rep.
• Do 5 reps on each side.

This modified one-leg push-up will challenge your arms while working your abs. Do actively squeeze the glute of the lifted leg to tone your butt too.