Hot weather always sucks the energy out of me. I don't think it's abnormal to feel weak when it's so hot -- your body wants you to stop moving, because it's working hard to keep you alive.
Extreme weather also affects your ability to digest food -- your blood is busy doing other things.
Don't ride at noon on a crazy hot day. If you have problems riding when the weather is not so extreme, then you might have a problem.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles