karletzel (33)in #habits • 5 years agoOld dogs, new tricksI've lately been more conscious about the effort required to change deeply held beliefs, in particular the ones you…karletzel (33)in #cycling • 5 years agoThe most underrated piece of cycling gearCycling pro tip of the day: I just wanted to highlight one of the most useful pieces of gear that I see almost noone…karletzel (33)in #backpacking • 5 years agoKings Canyon NP, June 2019 tripEvery year I take the boys backpacking at least once, usually the high Sierras. This year we did not get to high…karletzel (33)in #rogan • 6 years agoArt Imitating / Reflecting LifeAdding a little more random content to my seldom-updated blog for 2019. I've twice had the experience in the last 6…karletzel (33)in #fasting • 6 years agoFasting and HRV, part IILest you think (as I did) that the first time was an anomaly or random: And with a second system / measurement…karletzel (33)in #fasting • 6 years agoFasting and HRVCan you guess which night I was 24 hours into a fast? 113 ms might be my highest HRV ever. I have begun…karletzel (33)in #cycling • 6 years agoFTP, Zwift, Shoulder workTraining binge over the holidays worked, did an FTP test on Zwift today (nothing magic to Zwift, it's a standard 20…karletzel (33)in #sleep • 6 years agoSleep tracker comparisonQuick note on a comparison I ran over the holidays on 4 (yes, 4 in parallel) sleep trackers: Oura, Firstbeat…karletzel (33)in #cycling • 6 years agoDay 1 of a training blockFor a variety of reasons I have the week off to get some work done and I'm training a lot, my goal is 3 hours per…karletzel (33)in #cycling • 6 years agoEnd of year bingeThe blog's been quite a while, life has been full. Started a new FT gig in a startup, scaled back a number of things…karletzel (33)in #hrv • 6 years agoStress Analytics and Training LoadBeen tweaking the training up a bit lately and shortening my weekend rides, just getting too bogged down and tired on…karletzel (33)in #cycling • 6 years agoSome new carbon goodness, fall riding, prepped for winterWow been a long while, been super busy with a new FT gig in a medical device startup and my ex was outa town so I had…karletzel (33)in #cycling • 6 years agoChill day up Hwy 9Nothing too dramatic today, I had a somewhat rough week in terms of just feeling super fatigued, so I took it a bit…karletzel (33)in #cycling • 6 years agoNootropics for Athletic Performance - Day 1Two stories from my day today, one was just an overall very solid ride with a new PR on my local climb: I felt on…karletzel (33)in #testosterone • 6 years agoTestosterone OptimizationQuick post about a very important topic - hormone optimization. You can't optimize what you don't measure. I use…karletzel (33)in #cycling • 6 years agoNew PRs, and VO2max intervals, and needing a restAfter my backpacking trip I had a super sluggish week, as I indicated last week. Then I did my usual Sunday loop…karletzel (33)in #hrv • 6 years agoHRV Analysis of 6 days BackpackingFor this backpacking trip I wore the Firstbeat Bodyguard and ran the data through our Lifestyle Assessment ( Here are…karletzel (33)in #cycling • 6 years agoSome Altitude workBeen a hectic start to summer, just back from the Sierras with my boys. Legs have been super sluggish - One of…karletzel (33)in #fitness • 7 years agoTraining update, fatigue vs. intensityHere's yesterday's ride from TrainingPeaks: One thing that I really notice after so many years away from racing…karletzel (33)in #cycling • 7 years agoVO2max, another small stepLoad up the training volume, things improve. Here's some background behind VO2max: If you don't know your…
