Trainer tip from Michael Hauser
The question I get more often than any other during an orientation is "How many reps should I do?" Followed closely by "how much weight?" and “how many sets?"
The people who usually ask these questions are usually new to the gym or new to using the weight machines. That being said there goals usually fall into the get back into shape lose a few pounds category.
The simplest way to answer this question is 8-16 reps at a weight that the last two or three reps are much harder than the first two or three reps. Or put another way if 8 is easy do 10, if 10 is easy do 12, 12 is easy do 14, 14 is easy do 16, 16 is easy raise your weight and start over.
Working in this way will work both muscle endurance and muscle strength as you move back and forth in reps and intensity.