Variations for your pleasure (aka pain)

Suspension bridge- Like the plank, but instead of resting arms on elbows, extend the arms so that they are extended like in a rollout for an ab wheel. Works the shoulders and cains your core.

Divebomb pushups- start in an upside down "V" shape, go down into a pushup position and pushup with your head raised into so you body becomes a sort of "L" shape. (should be a smooth 3 step motion)

Diamond Pushups- Simply place your thumbs and index fingers to make a diamond shape, place this on the ground where your middle of your chest is and pushup... enjoy the pain.

Finger Pushups- Should be part of every boxers routine, strengthens hands. Simply get into pushup position except on fingertips and do as normal.

Clap Pushups- For building explosive power, not a pushup but explode-up... normal pushup but launch off the floor and do a clap before landing.

Handstand Pushups- Do these and see your power explode... Do a handstand against a wall, lower yourself till your head is about to touch the ground and then extend. Be careful though as this is difficult!

Leg Raisers- For working those pesky lower abs, lay on your back, feet straight in the air. Let your legs drop while still straight, stop them before they hit the floor and raise them to starting position.

Russian Twists- Great for obliques and torque power, (good for using a med ball or weights. Get in half crunch hands out and swing them from side to side, to increase difficulty just add weight.

V-Ups- Works upper and lower abs, lay straight out bring legs up (straight) and arms straight until you make a V shape and then touch your toes. Great exercise.

Squats- See how many you can do in a row (full ones) the kind of body wieght exercises!

More to come guys to spice up your workout routines!