Bicycle Crunches Bike crunches work obliques and rectus abdominis. Start by lying flat on the ground with your knees bent 90 degrees. Put your hands behind your head.
Crunch up as you extend your left leg and bring your left elbow to your right knee. On the other side, stretch your right leg and bring your right elbow near your left knee. Maintain alternation
Perform three sets of 20–25 reps per side.Russian Twists Expect Russian twists next. This workout works obliques and transverse abdominis. Seat on the ground, bend your knees, and keep your feet flat to set up
Peña suggests targeting the muscles you'll be working out to improve your warm-up efficiency.
To prepare for deadlifts, Peña suggests warming up with planks for core strength, single-leg unweighted deadlifts
Lean back and lift your feet. Keep your back straight. Twist your body left and right, touching your hands to the ground on either side. Maintain alternation.
Reverse Crunches Lower abs are worked by the reverse crunch. Start by lying on your back. Keep your arms at your sides or hands under your glutes for support. Bend and raise both knees to chest.