Slow jogging on flat ground 4km is not considered strenuous if your daily work does not exert your legs to begin with. But doing it everyday without 2 days break (inc shopping too) is not good.
They are too many example where people exert their body to gain the pain and to overcome emotion, is similar to drugs. Once the body gotten use to it, they exert further for more. The body is a live machine will counter balance to it but certain structure like bones and cartilage, lung and heart is slow to recover. Over the years then wear down and breaks.
The problem is, when people says I have high blood, high sugar, leg got problem, eye got problem they simply speak without even the slightest consideration. Meaning as long as I take my meds, I will be fine.... wrong, you need to take care of the habits too.
Not all obsese are really problem, some are meaty bec the matured body structure determine how much it can take. Super fat is on the other end of the over exert and their body too will breakdown bec of gravity to the bones.
Those who dies suddenly in their sleep is because they over exert their brains and body till their subconsious no longer awake during their sleep. When a sudden bad sleeping position causing obstruction or body loss breathing rythm, the sub-conscious did not response to the body call and dies off.
The key point, learn to listen to your body. Signs follow by symptom and then full blown reaction. The body will always signal you with signs like brusing, blur, pains, rash, shocks. Then the symptom to give you a warning follow by reaction. Learn to use "temporary avoidance" technique to see what is the cause just like allergy.
OMG!!! :bigeyes: r u sure?!! i jog 4km every nit!! scary...