This research exists. This study [1] suggests a 2.7 year increase in life expectancy. Doing some math, 5 minutes per day for 80 years is around 0.2 years.

So sure I might have gone fishing a bit to respond to a random HN comment but the data is out there and you have a brain.

[1] https://pubmed.ncbi.nlm.nih.gov/9794712/