GHD Anti-Rotation Russian Twist
The GHD anti-rotation Russian twist is a trunk stability exercise that improves the ability t...
GHD Sit-up
AKA Roman chair sit-up
The GHD sit-up is an ab and hip flexion exercise with an exte...
GHD Sit-up + Russian Twist
This is a combination exercise that addresses trunk flexion, rotation and isometric stabiliza...
GHD Sit-up Hold
The GHD sit-up hold is a simple isometric ab exercise and a nice break from planks, which are...
Half Moon
The half moon is a multiplanar exercise that’s a simple way to train several aspects of...
Hanging Leg Raise
AKA HLR, Toes To Bar
The hanging leg raise is an advanced trunk and hip flexion exercise.
Hang from a pul...
Hollow Rock
Hollow Rock
The hollow rock is a static ab exercise that can be used as some variati...
Jack Knife
AKA Jack Knife Sit-up
Lie on the floor with the legs extended straight and your hands at your head where you would ...
Jack Knife Complex
The jack knife complex is the combination of the jack knife, rotating jack knife and single-l...
Jack Knife Crunch
The jack knife crunch is a more demanding variation of the classic crunch, and an easier vari...
Jefferson Curl
The Jefferson curl is a back flexion and extension exercise that can be used for preventative...
Knees To Elbows
AKA KTE, Hanging Knee Raise
Hang from a pull-up bar or stall bars. Without swinging, lift the knees and crunch the trunk ...
L-Sit
The L-sit is a simple isometric hip flexor and ab exercise.
Execution
 ...
Low Windmill
The low windmill is a trunk exercise that emphasizes QL and oblique strength but removes the ...
McGill Curl-up
The McGill Curl-up is an isometric trunk exercise with reinforcement of a neutral lumbar spin...
McGill Curl-up Crunch
This is a dynamic variation of the McGill Curl-up.
Execution
Lie on...
Pallof Press
The Pallof press is an anti-rotation trunk exercise with numerous variations.
...
Pause Jack Knife
The pause jack knife is a variation of the jack knife sit-up that adds a pause at the bottom ...
Plank
The plank is the most basic isometric trunk stability exercise, but can be very effective.
&...
Plank March
The plank march is a variation of the plank that adds anti-rotational elements of trunk and h...