Just joined, I'm 55, very new to this started out just walking , then fast walking so I thought the natural next step would be to start jogging - so I have started doing alternate days jogging /walking got up to 6 1/2 mile with my walks (about 90 mins) and around 5 mile for my joggs( around an hour) nearly the same times!!
Ive already lost 3 1/2 stone so would like to keep at it, my pace has gradually come down when jogging from around 14 Min/Mile to just over 12 Min/Mile, I use a Polar M430 for tracking my progress and I know that Wrist based HR is not really that accurate but I'm taking it slow and the HR tracker seems to correspond with effort uphills especially, but I find myself in HR zone 5 ( around 90% ish of my Max) for alot of my Jogg.
Not wanting to spend more money on a chest strap would it be ok to carry on what Im doing and just try to slow a little
( but this seems so unnatural) during anaerobic pace not wanting to keel over with an attack !!!