So I've been wearing my Garmin for about 5 months now. It invariably tells me I have overworked.
My aerobic 'training effort' is very often at the maximum of 5.0 (a bright red, you are overdoing it old lady and WILL get hurt), occasionally I've managed a more reasonable 4.something (which is orange and means I'm working very, very hard).
My max heart rate tells the same story (more suited to 16 year olds than old ladies if you believe the 200-your age formula), the entire run is usually in heart rate zone 5 (another bright red one!).
Well listen up. I've just checked this morning's no pressure 5k- training effort 3.5!!!!!!!! a lovely shiny green, well done! almost the entire run in heart rate zone 4, a lovely (safer) looking amber! and my VO2 max? yup it's gone up another notch
It was supposed to be an easy run, it wasn't flat, it didn't feel particularly easy, but Garmin knows best today
Happy running everyone