I walked 9 yesterday in 90+ heat. It was late in the day and we had shade on the first few holes, so that helped. I also drank 3 bottles of fluid. Today it is going to be 95F for my league round. There is no shade on this course's front 9, so it will be a sweat fest. All this after I walked 18 on Tuesday in 90+ temps.
I agree with @JonMA1 and @RFKFREAK, long winters make playing in this weather a must!
After a 23 year layoff, just came back two months ago. My cheap starter set from 1990 was really beat up. So, I upgraded the whole set to TM M2 irons, a Callaway XR 16 driver and replaced my fairway woods with a Ping G30 hybrid. So far, I have done 200% better driving, and am a decent ballstriker off my irons. It was $$$, but at 61 years old, I felt I was due to have a decent set for once. My old ones were Wilson Strater, and had been through the war back in the early 1990s. The only original club I use is my Ping anser putter.
7/28 - back to full swing grind with focus yet again on grip, stance, take away, head still, low point control, in-line impact, and forward weight shift. Becoming second nature at this point. Really happy with the results of this challenge.