JUST A DIARY ENTRY ON JUL.5nd(writing about bananas)

I would like someone to correct my diary entry (or to tell me the natural way of saying some thing below. But I will be glad to JUST CORRECT my entry) I was wondering if you could do that for me, please?

JUST A DIARY ENTRY ON JUL.5nd

These days, I eat a banana every morning to keep to be healthy body. Actually, I am in the job which have to move so hard that I feel really tired when I get back home from my office. So, which is why, I guess, someday, I might get sick as much as I should take a break from the work. I think the most important, I mean more than anything in my life is keeping to be healthy body since, beside I have to go to my office to meet every work hour, and I want to enjoy something from the bottom of the heart when I am off the work. That's why, anyway, I eat banana everyday. It's because, you know, I hear that bananas, apples or whatever fruits have plenty of nutrition, especially bananas have the nutrition which make you prevent from heatstroke. To be honest, I got heat stroke because of high humidity the day before yesterday. I was confident in my tolerance for heatstroke, but I got that. For these reason, first; I want to keep to be healthy body, second; I don't want to be heatstroke anymore, I have been trying to eat bananas.