hello there. well i am 24 years old, use to do morning jog for more then 4 years. i am not actually a regular runner, in a week I use to take 1 or 2 days off. So my problem is now a days I feel to much tiredness for all day, some little pain at the upper side of my backbone and neck. Before jog I do some stretch and little bit walk. I don’t know what to do, my physician just don’t take it seriously and want me to take more rest, which I try to take beside my study and daily work. Can any one help me to figure it out.

For your kind information :
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>My jog time is =20 minutes
>Pulse rate after just finish run = 140 to 160
>body weight = 144 lb
>height = 5' 8''