Of these 1,567 participants, 400 were assigned to two weekly sessions of high intensity interval training (HIIT), 387 were assigned to moderate intensity continuous training (MICT), and 780 to follow the Norwegian guidelines for physical activity (control group), all for five years.
After five years, the overall mortality rate was 4.6% (72 participants).
The researchers found no difference in all cause mortality between the control group (4.7%, 37 participants) and combined HIIT and MICT group (4.5%, 35 participants).
They also found no differences in cardiovascular disease or cancer between the control group and the combined HIIT and MICT group.
BMJ. “Exercise intensity not linked to mortality risk in older adults, finds trial.” ScienceDaily. http://www.sciencedaily.com/releases/2020/10/201007193656.htm (accessed October 8, 2020). — https://www.sciencedaily.com/releases/2020/10/201007193656.htm
Finally some scientific justification for my lack of exercise.
lifeunderwriter.net 
And good news for my low intensity as I hit my 70s.
I spent two hours in the yard this morning doing low intensity. Good to know it helps.
I think the whole world is in need of lower intensity.