How your body reacts to a run

Everyone who loves to run knows that there are phases of how you feel during each and every jog.

The first ten
No matter if you’re a beginner or a seasoned pro, the first ten minutes of a run is always tough. Your heart will start to pound, your muscles won’t be warmed up yet so you may feel them tighten up. Every muscle that may have been a little bit strained in a previous workout, will burn. Joints will ache, breaths will be hard to take and every impact will run through your body like a shock.

ATP
While you run, your body calls on stores of adenosine triphosphate for energy, but the body only has small amounts of this in the system from food and needs oxygen to provide more – so your breathing will eventually become deeper.

Hitting the stride
Once your muscles have warmed up and your breathing has adjusted to provide your body with the oxygen it needs, your body temperature starts to rise and you begin burning through calories at a speedy rate.

If you’re in shape, things will be feeling good by this point as your body has adjusted appropriately and your muscles will feel open and strong.

If you aren’t in shape, however, things won’t be getting better. You’ll be feeling sluggish as your lung capacity will be topping out and therefore your ATP levels aren’t keeping up.