dude, you need to go on runs or something because 112, or even 91 for that matter, is like really unhealthy... I don't exercise like a champ but my avg heart rate is about 65, and can go as low as 53,(reply>), average bpm for a child is 60-70, average for an adult male ranges from 70-90. it's your heart rate that's the problem my friend,(reply>), Kaleb Kilfillen if your excited or nervous your heart rate goes way up, 65 is a resting heart rate when you aren't doing anything so that doesn't apply here,(reply>), he was nervous before jumping in an ice bath, that's why it was high. Also, maybe low pressure?