The greatest weight lifted by arm curls in one hour is 50,320 kg (110,936 lb 9 oz) and was achieved by Eamonn Keane at the Louisburgh Gym in Louisburgh, County Mayo, Ireland on 31 May 2012.

249 pounds

Denis Cyplenkov – New Strict Curls World Record – 113 kg/249.12 lbs – YouTube.

The most weight lifted by arm curls in one minute is 3,600 kg (7,937 lb) and was achieved by Eamonn Keane (Ireland) at the Louisburgh Gym in Louisburgh, Ireland, on 18 November 2012. Eamonn completed 30 reps of a 120 kg weight.

Moustafa Ismail

International fitness champion and global harmony leader, 74-year-old Sri Chinmoy, has curled a mammoth 256 pound dumbbell with each wrist—by far the heaviest dumbbell ever curled—and he did it 10 times with each hand!

If you aren’t fatigued, then move up to the next weight. For example, start with a two or three pound dumbbell when doing a bicep curl. If you can easily do 12 without pushing yourself to get those last few reps in, then the weight is too light and you need to move up to the five pound weight.

A good rule of thumb is to start with a weight you can easily lift 10 times, with the last two repetitions being increasingly difficult. For some teens, this might be 1 pound to 2 pounds. If you are strong and fit, you might start at 15 pounds to 20 pounds.

One of the biggest myths about weight lifting is that it stunts your growth. No studies have ever been shown that lifting weights stunts or inhibits growth. The most important aspects when training as a child are supervision, exercise technique, light weights, and high repetitions in the 12, 15, and even 20 rep range.

It depends, but a good starting point for a 14 year old boy is probably around 30-50 pounds, and for a girl id say around 20-40 pounds is good. Anything beyond that would be above average imo although it also depends on the weight of the person.

Physical activity guidelines for teens recommend that they get 1 hour or more of moderate to strong physical activity daily. In addition: Most of the physical activity should be aerobic, where they use large muscles and continue for a period of time. Examples of aerobic activity are running, swimming, and dancing.