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skinny
Re power spikes.
I had a biggie on my last ride. Z5 intervals. Using a garmin 920 XT watch.
Set off for my second interval. Glance down to check I'm not going off too hard. Current av power = 350w, lap av power = 950w and dropping. The slow rate the lap average power was dropping made me think it was either a very high, or very long (1second maybe) spike. This was backed up from my TSS jumping from 70 to 258.
Figured I'd have to fix that or my PMC would be trashed.
Uploaded to TP.
No spike, TSS of 98.
This makes me suspect my garmin of having a brain fart. Kinda annoying as I enjoy laughing at Edge users.