Gear up for bikini season with this fun push-up that takes a twist on the classic; it's an ideal variation for a strength-training newbie who wants to build their way to a full push-up. This modified one-leg push-up (aka the beach babe push-up) challenges your arms while strengthening the abs. To make things even more effective, actively squeeze the glute of the lifted leg to work that booty.

• 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 completes one rep.
• Do 12 reps on each leg to complete a set.