Laying down flat on a bench take two dumbbells one in each hand and press them both out in front of you to full lockout and lower them back down to the chest for 1 rep completed.
GHD sit ups
Sit on the hamstring curl machine and place your feet under the foot holders. Step 2: Lean backwards and let your upper body go down as far as it can go. Step 3: Place your hands behind your head and using your core raise yourself back up. Step 4: Touch your toes with your hands. This completes one repetition.
TTB
Toes to bar -hanging from a pull up bar, bring your feet to touch the bar in between your hands. Your arm should stay locked out and both feet should make contact with the bar simultaneously.
Press up
Get down on all fours, placing your hands slightly wider than your shoulders. Straighten your arms and legs. Lower your body until your chest nearly touches the floor. Pause, then push yourself back up. Repeat.
