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.

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.

Identical twins put health theories to the test. Twins find out if its possible to get a better brain, repel mosquitoes and get fit just by watching TV!

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

Twins test the best way to beat fatigue, learn real-world skills in the virtual world and the effect of smartphones on IQ.

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