This depends on the person and the kind of weight lifting you do. The short answer however is that lifting weights should help you to lose fat and gain muscle. If you are lifting heavily in order to gain muscle mass, you will gain weight. However, if you are lifting to get lean muscle, it should help to lose weight.
if you wanna get strong you should lift heavy weights, heavy weights gives strength and big muscle's, low weights gives fit/slim body
Muscle substitutes fat, lifting weights should help you lose weight from your arms
No i dont think so but if you gain too much muscle mass you're flexibility might be alot less than before. You should try gaining lean muscle, which results from less heavy weights and more repetitions.
To gain lean weight a person will want to eat more high calorie dense foods and eat every two to three hours. A few high calorie dense foods are peanut butter, lean red meat, bagels oats and dried fruit.
People do not stop growing by lifting weights. It was believed that weight lifting damaged the growth plates and stunted growth. It CAN happen, but only with very heavy weights, such as sets of 3-5 reps. They say no one should do HEAVY weights until they are 18, or fully grown.
around 12 years old
It depends on a number of personal factors, but a beginner should begin to see definite results from an effective weight-lifting routine in around four weeks.
Ways to increase weight are add more calories to your diet, start lifting weights daily to increase muscle mass, eat more foods rich in proteins and carbohydrates.
In order to gain muscle mass, you should do more weight lifting and less cardio. However, don't give up cardio altogether. Instead, cut your treadmill (or whatever) time down to 10 - 15 minutes, and do it prior to lifting. This way, your heart gets its workout. You could also get some whey protein and take it twice a day. I used it and was very happy with the results. Good luck and work hard!
The weights can definitely be a factor. But if you are doing other lifting activates those could also cause it. You should definitely see if moderating when lifting works. And maybe move down a few pounds and then work your way back up.
Let your body tell you. You should be able to use other muscles, especially in the lower body right away. Gradually work some shoulder movements in and see how you feel.