Think of this as an elongated crunch. In Pilates, the hundred is used to activate the core and build some heat. "This [classic Pilates move] is great because it engages your entire core," certified Pilates and barre instructor Tracy Green previously told PS. "Focus on the percussive breathing here — it's five sharp, quick breaths in, then five strong, quick exhales." The breathing is a big part of what engages your core.
- Start lying on your back with your legs in tabletop position. Engage your abs and round your lower spine into the floor.
- Exhale and lift your upper back off the floor, until the bottom tips of your shoulder blades are just touching the floor. Straighten your legs to a 45-degree angle, making sure your low back is staying connected to the floor. Reach your arms toward your feet, about two inches off the floor.
- Pump your arms up and down with a small range of motion, keeping your elbows straight. Inhale for five arm pumps, and exhale for five pumps. That's one rep. Over time, try to work your way up to 10.
