Anchor your feet under something and lean back until you feel your abs turn on. Try to keep your spine and neck as neutral as you can. You can go light and do the exercise for 60 seconds, or use heavier weights and shoot for 12-15 reps.
Maintaining the half sit-up position while performing any movement with the arms will challenge the abs, hip flexors, and even the neck muscles.
related posts
A Pain-Free Pec Program
Some guys have anemic pec development simply because benching heavy hurts too much. Here's your fix.
Variable Cluster Training
We all know building a muscular body takes time, but if you want to speed things up and kickstart some serious hypertrophy, you must make intelligent use of two core muscle-building concepts: absolute strength and absolute volume.
Testosterone Advantage Training
Small arms? You need testosterone and GH. No, not the illegal kind. The kind you get when you use this science-backed training split.
Tip: One Move for Indestructible Shoulders
Add this exercise to your workout to strengthen joints, build muscle, and increase range of motion.