The boat pose is a perfect follow to lying V-ups, because once you’ve made it to the top of a V-up, you’re in a boat pose. How convenient! Where the V-up shines because of extending and contracting your ab muscles, the boat pose works by forcing your abs to constantly contract.
How to do it: I suggest doing these following V-ups. Once you’ve completed all your V-ups, then move onto boat posing. Don’t look to hold it for too long either. Shoot for about 20 seconds of holding, for 2-3 rounds total.
If there’s an ab exercise that requires less actual work, I’m not aware of it. Six inches can be done anywhere, making it the ultimate lazy ab workout. However, it’s a top notch move when it comes to building ab strength, especially lower ab strength.
How to do it: Lie flat on a couch or floor. With your feet together, raise them about 6 inches off the floor, and hold it. That’s it. Simple, I know. You’ll notice pretty quickly just how difficult it actually is, though. I recommend people start off by going for 20 second holds, for 3-4 sets.