Yesterday I ventured out for a bit of tabata type torture on the TT bike. A brutal workout on paper, but I was mentally ready to knock it out of the park. By interval 2 or 3 (a little under my target of 400-410w) my legs didn’t feel right. Getting to 400 seemed like a chore and things didn’t get better. By the end of the first set I was starry-eyed, close to throwing up, and wanted to pass out. I rolled around for 20mins noodling in Level 1 as my legs were so blown, Level 2 wasn’t appealing. I got the second set done which was just as brutal as the first and made one final dig on the last interval. Thank f**k that was over… Lots of cussing, facial contortion, and damn sore legs. When I finally downloaded the file I realized that I hadn’t switch back the SRM’s slope from my track to road powermeter (24.0 vs 28.3). Turns out those intervals should have hurt as much as they did because I was churning out closer to 500w than 370-400w. At least I know I’m not getting weaker. In 2003 I was told “1 years from now, the only grade that will matter is the slope of your driveway”. Kind of true, but as I’ve experienced, SRM slope is more important!