Hi everyone. Apologies if this has been asked before but I cant find the search option anywhere!! Probably me being dumb.
Anyway my question is..
When I run 'fast' (for me that is) i.e 1 mile pace after about 5 mins I get a mildish pain in my lower back almost like its in one of my kidneys. This gets worse as I continue, never to the point of being painful enough to stop but should I be concerned or is this natural??
Just to motivate you all I have been trying this for 3 weeks now on a treadmill using hrm so I can gather all the relevant data. My average run time for each week has increased from 5.0 to 5.18 and 5.30 mph each week. Still *very* slow but at least its an improvment. Today I had the urge to run faster and go above 145 bpm but resisted - must be getting stronger. Another positive is my mileage is up from erratic 6-10 miles to week to about 13 now. Anyone having doubts stick with it for a while - I intend too.