torah learning and physical strength

I'm trying to put together a shiur and was hoping to pick some of your brains...
In the story of Resh Lakish's (re?)turn to Torah learning (Bava Metsia 84a), when Resh Lakish accepts the yolk of Torah, he loses his strength (at least as Rashi reads it, and I haven't seen anything else). Similarly, when Rashbi comes out of the cave (reference escapes me at the moment), his son in law is upset to see him covered in sores, but Rashbi says thathis weak physical state is the only reason he has been able to attain such a high level of torah learning.

So, what I would like to augment htese two sources:
1 - siilar situaitons/stories elsewhere
2 - later comentators who discuss the connection (inverse) betwen physical/Torah strength
3 - examples where physical strength, in ocntrast, goes hand in hand with torah greatness.

thanks for enabling my too-busy/lazy-to-actually-reasearch-ness