Questions about lifting

[DuhFee]

Hello, I am pretty new to all of this, been working out on and off for a year and a half, but for the last 6 months I've worked out steadily. I haven't had any real professional advice or things like that, so I just did 10 reps 3 sets of everything, at a weight that made it so i couldn't or almost couldnt finish the last set. But since I came on here there's one thing I don't quite understand.

What is the difference between 15 reps of a lower weight or 8-10 reps of a higher weight, as results go? My friends tell me lower reps + heigher weight is for getting big and higher reps with lower weight is for getting cut/tone. Is this true? Thanks in advance for any responses.

 

[Mudge]

Normally for muscular growth, 6-10 reps is around where you want to be. For strength, normally 8 reps and less, all the way down to 2-3, and occasionally a max attempt.

15+ reps are going to keep the heart going a bit more, but will not directly make you magically lose fat or get "toned." If you want to get a similar effect just drop your rest periods to 30 seconds, wont be terribly great for true bodybuilding, but will "replace" a mild cardio program if you keep that heart rate elevated in the gym.