What is a normal active heart rate

For most of us, between 60 and 100 beats per minute (bpm) is normal.

Explanation:

The rate can be affected by factors like stress, anxiety, hormones, medication, and how physically active you are.

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.