Sit ups are good but if you put yourself on a circuit of different exercises and just keep doing that circuit till you cannot do anymore it will be much better. Your muscles become resilient to the same exercise done over and over so keeping it fresh is important. That being said, if you do not ever do sit ups in the first place, then that would be a really good place to start.
Bro, you can't just do sit ups. You have to incorporate some hanging leg swings, v-sits, dying cockroach crunches, cyclers, overhead kneeling cable crunches...
Find 4 workouts and do a circuit of those four ab workouts. Sent from my iPhone using Grasscity Forum mobile app