Not to be confused with Jackknife.
Lay down on your back to start.
Bring your towards you until your thighs are aimed straight upwards.
Bend your ankles forward a bit.
Bring your head up until you are directly facing your legs.
Bring your arms forward to touch your shins.
Go back down and repeat this exercise.
Try to do more than your trainer
Purpose of exercise
This exercise helps to strengthen your abdominal muscles and to promote flexibility in your neck.
|Single Leg Extension • Sideways Leg Lift • Arm and Leg Lift • Single-Arm Stand • Balance Bridge • Torso Twists • Rowing Squat • Single Leg Twist • Lunge • Side Lunge • Push-Up and Side Plank • Jackknife • Plank • Tricep Extension • Push-Up Challenge • Plank Challenge • Jackknife Challenge|
|Yoga • Balance Games • Aerobics|