DS (16) has become rather obsessed with his body image over the last year or so. He's always been tall and skinny (similar ectomorph build to DH) and I suspect has been teased about it in the past. He hates looking at old photos of himself on holiday etc.
He now goes to the school gym about 5 days a week to lift weights. He has had some professional advice and I've seen his programme and while it's not what I'd want to do, I don't think it's dangerous (seems balanced, alternate days, progression etc)
He and his gym mates talk a lot about bulking out/cutting/ ripping etc and are all a bit obsessed about what they eat. DS has started asking for a lot more protein in his meals, buys boxes of protein bars (eats one after every workout) and snacks constantly on meat and eggs.
I don't believe he's actually hungry, but talks about the need to 'calorie overload' to reach his weight goals. He admitted that sometimes he only stops eating when he begins to feel a bit sick
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He's currently 62kg and 6ft 1 so this gives him a BMI of18.1, placing the BMI-for-age at the 12th percentile for boys.
So he could definitely add some weight and stay within a healthy weight range, but I'm encouraging him to set an upper target (70-75 kg perhaps?)
Any ideas/experience as to how I can help him to do it safely? I am bit worried that all the 'advice' he's getting from his friends may not be that good!