On Day 2, you’ll vary the emphasis once again but with three different and challenging moves. The side leg raise takes your oblique training up several notches because of the added resistance from your legs and the requisite body control. The knees-up crunch pre-engages your lower abs, while the hand placement precludes you from pulling on your head when fatigued, which is one of the main problems with traditional crunches. You’ll finish this mini-circuit with reverse crunches to zero in on your lower abs. – See more at: https://www.muscleandfitness.comhttps://www.muscleandfitness.com/workouts/abs-and-core-exercises/10-abs-workouts-10-days/#sthash.OivOGOBP.dpuf
The plank is a must-do move for abs aficionados because it strengthens and tightens your transverse abdominis. When these muscles are in good shape, they “pull” your more superficial rectus abdominis muscles closer to the spine, resulting in a smaller waistline. The knee-to-elbow version is more advanced, hitting the transverse abdominis but also roping in your obliques. The push-up with crossover is similar in nature, while the toe touch targets your upper abs
Exercise
Sets
Reps
Knee-to-Elbow Plank
4
10 (each side)
Pushup w/Knee Crossover
4
5 (each side)
Toe Touch
4
20
–Perform each move, in the order listed, for 30 seconds straight. Do not rest between exercises. Run through the entire workout four times total.
