They should, but sensibly.
Comparative: more sensibly Superlative: most sensibly
The adverb of sensible is sensibly.An example sentence is "he ate his meal sensibly".Another is "make sure you walk sensibly down the corridor".
This parka is sensibly constructed.
That is the correct spelling of "sensibly" (in a sensible or logical manner).
people are fit to keep themselves healthy
They behaved really sensibly apart from the poor people who would throw tomatoes e.t.c at the actors i they thought they were bad! :)
The clue there is in the word "sensibly". Eating sensibly means not eating types or quantities of food which would be detrimental to your health. Since healthiness is linked closely to happiness, that should be an obvious enough reason.
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Most people fit in many kinds of places but the popularity of people go to gyms.
That's all down to how hard, how long and how often you use it. ANd what you do in the time between. AN exercise bike can sure help, but you have to put the effort and the hours in. And you need to behave sensibly inbetween as well.
People who eat healthy and exercise are definitely fit now.