Another question....Sorry -
I decided to put my garmin stuff on strava - one of the sections it shows is 5 and 10 minute pwr - I have only just started to understand how to use my HR monitor and PE for training and am completely in the dark about these measurements - read some web info -but still puzzled as the info I found is mainly focussed on pwr meter data -
My questions are:
1. is this measure (on strava) useful - should I track it - I know using a pwr meter is very useful for people who are really training properly but I don't fit into that category

2. what does it tell me - as most rides are much longer than 5 or 10 minutes (hopefully) does it just grab a particular segment? sorry I might be really obtuse here...

3. should I be aiming for a specific number based on age/weight or other factors? - eg for cadence I always aim for 85-95 rpm... getting closer all the time and spending much more time on the big ring. I have a sinking feeling my 'power' numbers are very low - as is my average speed.
Any light you could shed would be great and if I can just ignore it that's fine too, but I am hoping to improve my av. speed and think that understanding this could help
thanks so much Fiona