OK I blended my watch heart rate and strava from the zwift session last night.

Zwift had me warm up. Then do some 340watt 45 seconds at a time and then finish on 5mins at 95% ftp

I ended up finishing holding 200w and above for 5mins. So I was quite proud of myself. As for the heart rate. Max 180

Check out my activity on Strava: https://strava.app.link/IYXnjSWQb1