Is exercise healthy?-YES! How long?- Ideally 1 hour daily.
But not everyone can do daily exercise for 1 hour, for various reasons.
So what’s the next best alternative?
Split up the exercise timings
You can do half hour walk in morning and half hour walk in evening.
Or
Three 20-minute workout sessions throughout the day. Even a slow walk for 20 minutes after breakfast, lunch, and dinner (about half hour after meal) would be beneficial.
See how you can incorporate fitness/exercise into your daily life.