Literally this bit:
They had greater physical strength, they could fight or exercise for days, they did not get sick, and quickly healed from injuries
Ah yeah! Do you have a reference for where in Tolkien's work that is?
Edit: It seems to match Glorfindel's description but is a bit bastardised. He refers to their bodies being strong in that they don't break easily. Not as in they can say bench press a tonne. Men are described as being stronger, even the men of the third age who have lost the power of Numenor.
Beren and Turin both outmatch elves physically for example.
This is from the Silmarillion;
"In those days Elves and Men were of like stature and strength of body, but the Elves had greater wisdom, and skill, and beauty"