These are called handcuffs because of the position you end up in on each rep. These might be tough, though, if you're stiff in the shoulders.
related posts
Tip: For Push-Ups, Make an Arrow
What's the best form for push-ups? Elbows close or elbows flared? Neither really. Instead, make an arrow. Here's how and why.
Tip: Better Barbell Rowing
What to do before you ever lift the bar, plus some great advice about form.
Tip: Get Better at Squatting With This Drill
Here's a move to help you fix your unstable squat. Check it out.
Ancillary Circuits
Admit it. A lot of times you plan your workouts around your major muscle groups and just "throw in" a few sets at the end for your ancillary muscles – calves, abs, and forearms.