It doesnt really matter how many you can do. Whether it be only 1 or 2. As long as you're pushing it to the top of your capabilities, you'll get stronger eventually. When i was 12, i could barely do a single CHIN up. Now i'm 14, and i can do lots. I do this everyday: 10 chin up, no rest, 10 pull ups, no rest, and finally 10 wide grip. And i dont break a sweat.
According to the presidential physical fitness test you should be able to do at least 11.
There aren't any statistics for that question but I would imagine that being able to do more than one is better than most adults.
30
52g of portions a 14 year old boy should have (years: 14-18)
A nine year old boy should eat about 2,200 calories
The number of erections that a 12 year old boy should get varies. Each boy is different and experiences puberty differently.
40 pounds
The child should only have one heartbeat.
sorry to say it but at 22 you're not a boy
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A 7 year old boy should be about "49 to "55
very they can pull a 15 year old boy over sometimes
AIDS
3 a day and snacks in between