You can use your keyboard to see the next slide ( ← previous, → next)
Start in a full plank position with both legs straightened behind you, feet slightly wider than hip-width apart. Draw your abs in tight and bend your right knee in and across your body towards your left elbow, allowing your hips to twist. Quickly step your right foot back into plank position. Repeat with the left leg. That's one rep. Do 10 reps in a row, and then go back into your tapping pushups [1A].
Form tip: Exhale and pull your belly button in towards your spine as you draw your knee across your body, and keep your arms and shoulders strong and steady.
Try to complete 2 full sets, moving quickly back and forth between the pushup and the plank, before moving on to the next pair of exercises.
Tighten and tone your entire upper half with nothing but your own body
Build a Better Upper Body
The Ultimate Arms and Abs Workout