Form tip: “I love doing sit-ups when I have a table to anchor my feet on or a workout buddy holding my feet down with their ...
Enter: the V-up. Also known as a jackknife, the bodyweight move recruits the entire core and provides a stability challenge that sit-ups and crunches ... That's 1 rep. Form cue: I can't say ...
The benefits of a strong core are endless, but finding the motivation to get down on the floor for those sit-ups and crunches ... is a great way to maintain proper form and prevent injury.