I'm doing one-legged standing calf raises and crunches in my workout routine. A lot of people talk about training these two muscle groups (calfs and abs) specifically based on repetition, therefor with no weights. However, there are atleast equal the amount of people telling the oposite and using extra weights and doing less reps.
So for example on a bench press, I obviously put on the weights I can handle and do, like in my case, 10 reps. But for calfs and abs I'm pretty confused now.
Is it better to take some extra weights for these exercises and only do about 10 reps too? Or should one take no weights, only the weight of the body itself so to say, and do as many reps as you can?