Why do you need safety precautions after and before exercise

Depending on the type of activity, injury risk can be augmented with increased intensity, frequency and duration of activity. To minimize the risk of activity-induced injuries, you should be aware of the signs of over-exertion (such as breathlessness and muscle soreness), and take reasonable precautions.

Explanation:

10 Common-Sense Safety Tips for Exercise Enthusiasts

Get your body ready to exercise. Always warm up before you work out.  

Don't put yourself at risk.  

Organize Your Workout Environment.  

Follow instructions.  

Have a game plan.  

Proceed sensibly.  

Use your lungs.  

Listen up.

its "give abdominal thrusts" that way you can dislodge the object in the persons throat.