CRUNCHES.
Lie flat on your back by bending your knees; raise your shoulders off the floor without using your neck.
LEG RAISES.
Lie flat on your back, raising both legs from the floor at the same time in a fluid using your neck.
REVERSE CURL.
Keep your hip on the floor and bend your knees towards the chest while lying on your back.
CAPTAINS CHAIR.
While sitting on a sturdy chair, grip the armrests and slowly lift your knees towards your chest.
Keep your back straight and do not use your neck muscles.
FLUTTER KICKS.
Lie on your back, straighten both legs and alternately lift each leg at an angle 45 to 90 degrees.
FULL SIT UP WITH TWIST.
Lie on your back with knees bent and your feet flat.
Contract your abdominal and raise shoulders off the surface.
Twist your shoulder against the opposite knee and go back to starting position.
Repeat for each side
STRAIGHT LEG OBLIQUES
Lie on your back and lift your legs straight into the air.
Alternatively rotate your legs to either side, by keeping your legs straight at all times.