AKA Ab wheel, evil wheel
The ab rollout is an exercise that strengthens the abs isometrically and the hip flexors dynamically.
Hold an ab-wheel or barbell ...
Back Extension (Hyperextension)
AKA Hyperextension, hyper
The back extension or hyperextension is a very basic but very effective exercise for strengthening the extensors of the back to maintain the arch needed in weightl...
AKA inverted plank
The back plank is a simple exercise for strengthening isometric back extension.
Place the upper back and lower legs on elevated surfaces...
The cross chop is a rotation trunk exercise that can be done with a range of implements.
Hold a weighted implement (kettlebell, plate, sandbag, medicine ball, etc.)...
The crunch is a simple trunk flexion exercise.
Lie supine with the knees and hips bent to place the feet flat on the floor. Hold the fingers at the sides of the hea...
The decline sit-up is a trunk and hip flexion exercise that allows greater difficulty through a longer range of motion compared to the sit-up.
Secure your feet in t...
AKA Roman chair sit-up
The GHD sit-up is an ab and hip flexion exercise with an extended range of motion.
Set up a glute-ham bench or Roman chair to place ...
GHD Sit-up Hold
The GHD sit-up hold is a simple isometric ab exercise and a nice break from planks, which are the most boring ab exercise ever created.
Set up in a glute-ham bench ...
Hanging Leg Raise
AKA HLR, toes to bar
The hanging leg raise is an advanced ab and hip flexor exercise.
Hang from a pull-up bar or stall bars. Without swinging, lift straigh...
The hollow rock is a static ab exercise that can be used as some variation for the unweighted plank.
Lie on your back with your arms overhead a...
The jack knife is an advanced variation of the sit-up involving the raising of both the legs and trunk.
Lie on the floor with the legs extended straight and your ha...
The plank is the most basic static trunk stability exercise, but is also very effective.
With the feet together and toes on the floor, and elbows bent and resting o...
The reverse crunch is a variation of the crunch in which the legs and hips move while the trunk is anchored.
Lie on the floor and hold a stable rack or post behind ...
Rotating Back Extension
The rotating back extension is a variation of the back extension that adds rotation to address more of the trunk.
Perform a back extension but rotate as you extend ...
The sit-up is the most basic trunk and hip flexion ab exercise.
Lie supine on the floor with the knees and hips bent to place the feet flat on the floor (the feet c...
AKA Standing plate twist, standing rotation
The standing twist is the simplest trunk rotation exercise.
Stand with the feet about shoulder width and hold a...
Upper Back Extension
The upper back extension is a simple exercise to strengthen thoracic spine extension.
Lie on your stomach and place a dumbbell behind your neck, holding it in place...
The V-up is an ab and hip flexor exercise that can be considered an advanced variation of the jack knife.
Lie on the floor with the legs extended straight and your ...
The windshield wiper is an advanced trunk rotational strength and stamina exercise
While hanging from a pull-up bar, lift your torso to horizontal with the hips fle...