<human>: Hi guys, M27, 1.75m @ 80kg (5' 8.9" @ 176 lb) here. I've recently changed my diet quite a bit and became way more active. So I've lost already a few kg and I'm on my way to a healthy weight.

Now I'm usually biking, where something like 50km (31 miles) isn't really an issue for a nice afternoon tour on the weekend. But my bike is currently in the repair shop and since I wanted to do something yesterday I decided to go running. Since I roughly know what I can do and can't do I decided on a 1 minute running, 1 minute walking interval. The whole run was over 10km (6.2 miles) and took me about 75 minutes. It was exhausting and at times quite tough, but overall I didn't have a bad feeling.

**Now to the actual issue:**
I monitor my heart rate with a chest belt and this was the run:  You can clearly recognize the interval and before walking again my pulse was between 184 and even as high as 194. Within the minute of walking it usually went down below 160, a few times I walked 2 minutes if it didn't go below 160 after 1 minute of walking. Now I've read a couple of times that I shouldn't exercise at such high heart rates and that it could actually damage the heart. I wanted to check in with you guys before I'm getting advice from a doctor. Should I stop? Is it actually dangerous to run this way? What should I change? Thanks for your time and any advice.

Can you condense the text into three sentences or less?
<bot>: Interval running 1 minute running, 1 minute walking. Heart rate up to 195bpm. Should I stop / change something?