Reading up on nutrition and I have a couple questions:
Google produces some wildly different recommendations as to when you should bring water/gel on a run, and how often you should take a gel. What methods do you all follow? So far I haven't used either during a workout, but with my runs getting longer and the weather getting warmer, it may be time soon.
I see that pre-workout coffee/caffeine is popular, and there are supposedly quite a few benefits. Lots of gels have low doses of caffeine as well. This seems counterproductive for aerobic training though, no? When I tried drinking coffee before one of my runs, I had to go significantly slower to stay in the proper HR zone. Maybe my morning coffee is just too big.
Warning - word vomit wall of text ahead.
Less is more and practice what you'll do race day - I want to carry as little as possible at all times. When I marathon train during the summer I set up a mini aid station in my garage. 32 oz hydroflask filled with ice and water, wet cloth in the beer fridge, two small bags of pretzels, two small bags of fruit snacks, and a couple honey jam sammys. I never eat all of it, but better to have it ready and not need it than the opposite. First lap I remove my hand held from the freezer (frozen solid) and am off on my way - it begins to melt after about 20-25 mins and on those especially hot days it's polished at about 50 as I finish lap one. I grab the wet cloth as I re-fill and just let it soak on my neck as I work through the transition. I empty all of the water from my hydroflask (not the ice) into the handheld and grab whichever of the foods I may need then put the cloth back in the fridge and head back out. This is the most difficult lap as I want to start drinking water quickly, but I also don't want to run out too soon and the trade off to that is luke warm water when I start drinking (blegh). My goal is to go as far beyond 40 mins as possible before re-filling in front of lap 3. At this re-fill I unload the (mostly still) ice from the hydroflask then bang on the door to get a wife or kid to re-fill it for post run grab whatever food I need then head back out. Since I'm starting with ice this time I can usually make it further before the water becomes luke warm, but it also helps that I know I don't need to go as far as lap 2. After all, anything near 2 hours in these conditions is a win.
All that said, while I am a data nerd I am much more run by feel than most of my contemporaries. I'll review effort after, but generally the only time I monitor during is if I am doing an extended high effort workout like a tempo. Otherwise I try to defer all of my over-thinking to when I am also not running.