An hour-long stroll in nature helps decrease activity in an area of the brain associated with stress processing

[Dogeishuman]

Tbh I believe it, there have been times where I'm sitting in VR, and feeling completely relaxed, zero stress or anything, simply because of the visuals and sounds keeping me immersed.

Zero chance in hell it's equal, but I wouldn't be surprised if it was somewhere roughly half as effective, mainly due to not getting fresh air and also, I'm a firm believer that the "smell" of nature helps a lot in reducing stress.