>>76349538
You don’t have to be thin. You can be a strong 200lb climber doing V7s/V8s, which is considered advanced on the bouldering walls, it will just take 3 or 4 years of consistent training.
Climbing, particularly bouldering as its more strength focussed rather than endurance, can give you a decent physique, you just have to be willing to bulk up to around 180lbs before you start to see the real benefits. The heavier you are the better you will look up to a certain point. A lot of skinny dweebs would see the extra weight as a hinderance, but its basically like having a weighted vest compared to where you would otherwise be had you chosen not to gain weight, and considering your basically doing pull-ups on the wall in awkward positions which often shift the weight onto a single arm at times in contracted positions, it will be a huge benefit.

Even so, I think if people just added a couple of sets of weighted body weight exercises to their routine, particularly weighted dips to prevent muscle imbalances from climbing, they’d have a solid looking physique with relatively low effort. I personally believe that a lot of climbers just suck at eating, and so they end up squandering their aesthetic potential out of laziness and fear that they’ll have to drop down to easier routes.

I know Magnus is only 160lbs, but if he bulked up another 20lbs he’d almost certainly look better and be stronger overall.