There are two reasons why Im asking this:
1. I watched a video by a fitness instructor who discussed how some people warm up by lifting weights and when they get upto a useful weight which is able to build muscle the person is tired because the the weight they used to warm up where to heavy .
2. the weights I have are 20lbs I dont feel there doing me much benefit and Im looking to buy heavier weights
But the questions is is there a method of deciding which weights to use. For example, lets someone walked into a gym for the first time how do they know to use 10lb weights many time or use 20lbs and soon move onto 30lbs?
1. I watched a video by a fitness instructor who discussed how some people warm up by lifting weights and when they get upto a useful weight which is able to build muscle the person is tired because the the weight they used to warm up where to heavy .
2. the weights I have are 20lbs I dont feel there doing me much benefit and Im looking to buy heavier weights
But the questions is is there a method of deciding which weights to use. For example, lets someone walked into a gym for the first time how do they know to use 10lb weights many time or use 20lbs and soon move onto 30lbs?