ok this may be a bit weird but whenever i go jogging i usually do 2-3 miles 3X a week but i really go hard on the way back.

When I get in I find im week and shaking a little and cant talk to well (but thats due to loss of breath and being hot etc)

I was just wondering if this is normal if you really push yourself and will this stop happening after a while? I used to jog 4 miles 3X a week but I moved and my partner had a baby so my fitness dropped.