I am in a bit of confusion about how to calculate and increase the weights to use in an exercise. Like, doing 3 sets of 8-12 reps, using 10,8 and 6 kg's (its ok to reduce the weight as you go down the sets isn't it?) if I can do the first set for about 14 reps then I increase the weight used in the first set. But should I right off increase the weights used in the second and third sets too? Or should I try and work to the point where I can do more than the required reps in the 2nd set and increase the weight, and then try and do the same with the third, and after that try increasing the load in the first set again and so on? (Otherwise I'll be just increasing the load on the first set only always, right?) Sorry, this is basic stuff, but I am confused so please do advise.