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> This, along with an under developed chest can cause your shoulders to roll forward resulting in bad posture.

I would have thought they would have rolled back - a tight chest and unworked back muscles will cause the shoulders to roll forward due to the pecs being in a constant state of tension and the back being unable to balance it all out. I wonder why the opposite would have the same effect.

climbers tend to overdevelop back muscles. pecks are largely not involved - it's all flexors not extensors.

Yeah, so if the back is tight why would the shoulders roll forward?

>This is usually your right half because setters are usually right handed and will set routes that lead to you working your right half more.

This is not my experience and not something I have ever heard more advanced climbers talk about. Strong climbers climb outside which isn't set for any style and then go on to set inside based on that strength. If you are overworking one side it is generally a technique issue which can be overcome with practice.

> I just wish climbing gyms weren't so expensive haha.

Think that's the case with any specialty gym. Crossfit, climbing, MMA/Boxing/BJJ all are very expensive.