Shared suffering & growth is how you form the strongest bonds.
If you're biking w/ people and they stop to rest (or b/c of rain). Time to make a choice. You can keep going, or stop with them.
If you keep going, you'll grow, your legs will get stronger.
If you stop, they'll grow, their legs will get stronger. But you have to keep stopping to see it happen. In time they'll stop less often. You'll love watching them get stronger, and they'll love that you were there to witness their growth. You're sharing in their suffering, even if you're not winded or uncomfortable yourself.
Fast forward to the future, now you're struggling with something physically or emotionally, and one of them may stop to be by your side. They could've pushed past you but they want to be there for you. You were there for them.