Doing dips on the edge of a chair allows you to target your triceps using your bodyweight as resistance — and if you're doing them right, it can really put your arms through the wringer. Sit on the edge of the seat and place your palms on either side of your hips. Shift your weight onto your palms, lifting your butt forward and off the seat of the chair. With bent knees, bend your elbows and lower your upper body, creating 90-degree angles with your arms. Straighten your arms and repeat. To increase the difficulty, extend your legs.
Do three sets of 12 reps, but keep the tempo slow and steady. Count to four as you descend, hold the position at the bottom of the dip for two seconds, and return to the starting position.