#2 Mountain climbers
Mountain climbers are very effective in targetting the core, making them an effective exercise to build six-pack abs. Additionally, they work on the quads, hamstrings, deltoids and the pectoral muscles.
Instructions:
Step 1: Lie down on the floor in a push-up position and rest your body on the palms and the toes. Keep the legs together and avoid bending your elbows while performing mountain climbers.
Step 2: Bring your left leg towards the chest at a rapid pace until the knee is beneath the abdomen.
Step 3: Pause for a moment and return to the starting position. Perform the same motion using the other leg to complete one rep.
Repeat the exercise for the recommended number of repetitions.
Important tip: Do not let your body sag towards the ground while performing this exercise.
Next up: Plank