need help with weight and reps

[yazy10]

what is the best way to got bigger and tuned muscles. i know that u need a diet,carbio and have to do weights. the only thing that i do not understands is which weight to use and the reps. its hard to explain so i will give u a example. when i do chest press with dumbbells i do a weight where i can do more then 8reps. Or should i do a weight which is header to get 8reps.

 

[jpolito830]

Start at a weight where you struggle to get 10...Maybe 8 easy then struggle with the last 2 reps.

 

[Gazhole]

Use a weight you can complete a few sets with at that particular rep range without going to concentric failure. If you cross the line between challenge and struggle, you've gone too heavy.