1. Get Thin Fast

This episode tests the best way to lose weight, improve memory and beat pain without pills.

2. Sleep Deprivation

Twins test the best way to beat fatigue and discover the effect of smartphones on IQ.

3. HIIT versus Easy

This episode explores the best way to get fit, beat nausea, and discovers if you can enhance brain performance.

5. Giving Up Smoking

Identical twins put health theories to the test. Twins test the best way to kick a habit, see if hand-washing keeps you healthy and try to improve concentration.

6. Learn a Language

Identical twins test the best way to learn a new language, attempt to look younger and test an easy way to lower your calorie count.