What if I take a 5-minute break to walk outside every 45 minutes?
It's very difficult to find reliable sources on this. It seems everybody is just parroting whatever they currently believe. How can I find an authority on this subject?
http://annals.org/aim/article/doi/10.7326/M17-0212
> Take a movement break every 30 minutes, say experts. No matter how much you exercise, sitting for excessively long periods of time is a risk factor for early death, a new study published Monday in Annals of Internal Medicine found.
> There's a direct relationship between time spent sitting and your risk of early mortality of any cause, researchers said, based on a study of nearly 8,000 adults. As your total sitting time increases, so does your risk of an early death. The positive news: People who sat for less than 30 minutes at a time had the lowest risk of early death.
In short, sitting time accrues in a health debt you can't pay back with breaks.