I take a 30 min bike ride midday, not a hard ride, just get on the bike and start peddling, I'll now do a leisurely 6-8 mi.

My cognition in my 40s is now better than it was at 26, at 37 before I started this routine I thought my engineering career was over, the post lunch crash, the mental tiredness, just terrible.

The fact that we build our brain work spaces so distant from physical movement is bad for our mental health, our soles, our souls, and doing untold economic damage to our country (the u.s. in my case.), I tried lunch walks for years and it's just too fucking boring, cycling is great, after work I rollerblade and it's so mentally engaging and distinct it obliterates the after work fog.