Timberlake Justin - Rock Your Body Bass

Main line :

G||----------------------------------------------------------------||
D||----------------------------------------------------------------||
A||----------------------------------------------------------------||
E||-3-3-5---17-17----0--0-0-00---12-12-----------------------------||
B||----------------------------------------------------------------||

or

G||---------2-2----------------------------------------------------||
D||------------------------------2-2-------------------------------||
A||----------------------------------------------------------------||
E||-3-3-5------------0--0-0-00-------------------------------------||
B||----------------------------------------------------------------||

I prefer using the first method because gives a better sound.
For the 'bridge' part, just improvise in Em.