Tin Pot
Guru
To stay healthy, the NHS recommended minimum hours of exercise per week is 2.5 hours.
https://www.nhs.uk/Livewell/fitness/Pages/physical-activity-guidelines-for-adults.aspx
Perhaps raise a concern that you are seeing no indication of exercise from your relatives. Ask them how many hours per week exercise they are doing of moderate intensity.
I upped my training to 12-16 hrs hard work per week and peaked at 21 hrs. It was hard, it was exhausting...but 40hrs as a labourer on a building site is a weekly effort for some.
I don't think I'm built for office work, and my body suffers if it's not being used properly.