He didn't care if his heart gave out from the strain.

His heart felt like it was going to give out from the strain of this race.

From the strain on my face, he can tell I'm ready to lose it.

Her face was beginning to look almost hollow from strain.

Her body was rigid from the strain of the day.

He was already sweating from the strain and certainly not used to it.

They usually become weakened or even pass out from the strain.

This works to protect the body from further strain and injury.

Add a few more, and I collapse from mental strain.

"If you pass out from the strain, I'll know what to do about it."