She doesn't wash from Monday to Friday.

Three sentences baked apples. Could you help and explain mistakes. Thanks

Medical scientists claim that eating baked apples are an effective way for shedding extra kilos. They contain a lot if fiber and pectin. They advise to eat baked apples every day during a week with a glass of yogurt. Baked apples are very useful for having a healthy  digestive system and heart.

*Sportsman in English

In Russian language we have a word *sportsman.
It applies to people whose profession is any kind of sport. Like the word *musician applies to all musicians in general.
What is the equivalent word for *sportsman in English?
Google translates the Russian word ''спортсмен *sportsman'' like ''athlete.
Is there a word that applies to all professionals in sport? 

Yes! Athlete applies to any professional sportsman.

I would recommend Sergey Lazerev

I think that would be correct. I assume your perspective is in 1st person.

I would say : I'm telling you before I tell them at home.

JUST A DIARY ENTRY ON JUN.20th(writing about my sleep time)

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 JUN.20th

Nowadays I've been trying to take a sleep for six and a half or seven hours. It's of because some reasons. One of some reasons; approximately seven hours is said to the most appropriate times to work cheerfly all day and keep to be a good health body. But, for me, it is a little difficult to keep sleeping  for roughly seven hours because I have something a lot to do within a day, so I've been trying six and half hours in the most days of a month (Sometimes, say, when I was in off work day, I was able to take a sleep for 7 hours) When I talk about this rule to my friends, they often says to me like this "Seriously? Is sleeping  for seven hours enough to work cheerfully everyday for you?" On the other hand they take this for roughly 9 hours or more. To be honest, I understand why they think like this, but I am okay in the situation like this. What if I  slept  a little during working, what would I do? Yeah, just in case, during lunch time, I have a nap about 10 minites. There I have it.