Core

Eccentric Reverse Crunch

Eccentric Reverse Crunch

lie on a mat or the floor, bring your knees[...]
Dumbbell Russian Twist to Overhead Press

Dumbbell Russian Twist to Overhead Press

Grab a dumbbell, twist torso to one side, feet elevated. [...]
Incline Mountain Climbers

Incline Mountain Climbers

Low bench, narrow hand placement.  Drive knees toward elbows.
Med Ball Deadbug

Med Ball Deadbug

Place a med ball on your knees.  When you release[...]