: Is running safe for me I am a beginner jogger/runner on a high protein diet. I am 32 years old and have a BMI of 31. I am 175cm (~5'9") tall, and weigh 96kg (211 pounds). I walked for a couple of weeks and now I can run for

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From my experience as a personal trainer, I would say that regardless of the 180 being accurate, if you are not feeling dizzy, nauseous, or a headache then you are not overdoing your running. Most of the overweight clients who I have trained, would usually feel dizzy and or nauseous when I pushed too hard.

The fact that you are getting tired after only 17 minutes isn't something to worry about either. It can simply mean that you are still not very conditioned, and/or it can be that you are running at a pace that is simply too fast for a long sustainable jog.

The main thing to focus on is your body's communication. The body has a way of telling you when it isn't happy and you will certainly know when that's the case. So long as you feel fine after your run and nothing more than tired then you are ok.

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Being 32 years old your theoretical maximum heart rate should be 188(this is from 220 - age). This means you are close to reaching your maximum heart rate but this is nothing dangerous for your heart unless you got a heart disease which prevents you from reaching a high heart rate.

If I understand you correctly you are indeed feeling very exhausted at the end of your run and as we can't know how well your heart is we can't definitely say that your working out like that is not dangerous. Should you be really concered or start to feel that something wrong you should see a doctor.

FWIW: Generally speaking it's not dangerous for your heart if your work out really hard if you have a healthy heart.

To consider is the fact that your heart will be fine but you might feel nauseous reaching this level of physical stress(don't know how to put it better). Nevertheless working out like you are doing will make your assumed healthy heart even stronger.