The average is 60 to 100 bpm, but an ideal heart rate is 50 to 70 bpm.
Explanation:
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. However, recent studies have suggested that an ideal resting heart rate is between 50 to 70 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.
Its obviously wrong. And the right desicion is to say no, and try to explain that it is wrong for them to even have it. But its your own desion, just try to make the right one.
If they want to gain loose weight then they would need to eat well, so taking in a normal amount of calories but exercising more. To gain wait, take in more healthy calories but not that much of an extreme work out.. Hope this helps.