Climbers Point
This is a really general question. It depends on a few things:
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Why kind of climbing are you referring to?
If its bouldering, then you can climb on your own, but if sport climbing, then you require one more person to belay you. -
Why are you climbing?
Assuming the reference is to bouldering, then the question is why you are climbing. If you are climbing to just detach your mind from the day and to just be physically active, then yea, you could climb alone, and it may be better also if you just don't want to deal with people.
On the other hand, if you are bouldering with the goal of improving, then I would say both options are important for your progress. Climbing with other people, especially those that climb better than you, can really give you more insight into climbing, more ideas, betas, experience, and just more growth in general. Climbing alone is still important in my opinion though because it's when you are alone that you can actually practice all that you have learned with others.
That's my take on climbing with people vs climbing alone.
Extra point:
I personally find it quite hard to have a proper bouldering session with some friends. Instead of climbing hard routes, we end up just messing around.
Rock climbing doesn't really get you big and bulky. It can make you stronger though, just without the massive body size.
There are some people who tend to grow and bulk up faster than others, at least to a certain size. They may get some more muscle mass than others, but for the most part, you muscle mass won't really increase that much.
Because we are in pain! But not that much pain. Generally, climbing shoes are not comfortable, and leaving them on for a long period of time just starts to hurt after a while. Taking them off in between some of the climbs just lets our feet relax a little bit, and delays the session-ending feet pain.
I have a pair of shoes (Mad Rock Drone HV) that I got resoled 3 times already.
Usually the people who resole it tell us when we should move on to a new shoe, which is when the old shoes cannot be resoled anymore, but they have yet to do so for mine!
I have friends who have resoled theirs just twice and were told that there probably wont be a next time, that their shoes are just too damaged overall.
It really depends on your shoes and the status of them. If areas of the shoes are damaged that are not going to be replaced or fixed in the resole, then resoling obviously wont help them. As for the amount of time a climbing shoes can be resoled though, as I mentioned, mine have gone for 3 resoles, and will probably go fro at least one more, my friends have gone for just 2 and will probably not go for any more, so, it depends.
Try to send them as much as you can I would say.