>>1389372For me its very low on weekdays when riding after work, and usually much higher when riding in the morning in the weekend. Power output doesnt change much but its a huge difference in heart rate. It does feel better with the higher heart rate though, I feel noticeably snappier, although when looking at the power data it doesnt seem like I actually am snappier.
Heart rate is a weird thing, its fun to ride with both power and heart rate to witness it.