Humans have crafted thousands of exercises in their quest to look better, be stronger, and run faster.  They range from just about useless (bicep curls) to extreme (tire flipping).  All exercises are not created equal.  There are a few exercises that can make you throw up if you aren’t careful.  These exercises require physical and mental strength to master.

They are as follows.

Burpee

Here is how you do a burpee (Source):

1. Begin in a squat position with hands in front of you
2. Kick your feet back to a push-up position
3. Immediately return to your feet in the squat position
4. Leap as high as possible from the squat position
5. Repeat, moving as fast as possible

Here is a burpee in action.

Pull Up

Here is how you do a pull up (Source):

1. Start each rep from a dead hang with straight elbows.
2. Lead with your chest and keep your shoulders back.
3. Drive your elbows to the floor.
4. Lift your body until your chin is over the bar.
5. Repeat.

Here is a pull-up in action:

Deadlift

Here is how you perform a deadlift (Source):

1. Place a barbell on the ground and add weights to it based on your strength level.
2. Step up to the bar so that your feet are shoulder width apart and under the bar pointing forward or slightly outward.
3. Squat down and grip the bar.  Flatten your back and look straight ahead.
4. Lift the bar off the ground by standing up, raising your hips and shoulders at the same time and maintaining a flat back.
5. Lower the bar in a controlled manner back to the starting position.

Here is a dead lift in action:

In your opinion which exercise in this list is the hardest?

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