Sprawdzcie szybko plx :)

Dear John
I’m writing to you because yesterday I was on the interesting meeting in Club Relax. This meeting was about the healthy diet. This meeting was chairing by Doc. Zenon Kowalski, the most famous specialist in his domain (healthy diet).
He told us many interesting things connected with the healthy lifestyle. For example he said that when we were ill we shouldn’t eat to much, and we rather ought to cleaned our organism – by fest. He also said that we should ate slowly and with calm, and under no circumstances we when we were under stress.
I think a lot of this what he said is true and I will checked all of his advices on myself in the nearest occasion.
Yours faithfully
XYZ

drobna poprawka:

Dear John
I’m writing to you because yesterday I was on the interesting meeting in Club Relax. Subject of the meeting was – “The healthy diet”. The meeting was chairing by Doc. Zenon Kowalski, the most famous specialist in his domain (healthy diet).
He told us many interesting things connected with the healthy lifestyle. For example he said that when we were ill we shouldn’t eat to much, and we rather ought to cleaned our organism – by fest. He also said that we should ate slowly and with calm, and under no circumstances we when we were under stress.
I think a lot of this what he said is true and I will checked all of his advices on myself in the nearest occasion.
Yours faithfully
XYZ

Widzi kots jakies błędy? :)

Hmmm
we rather ought to CLEAN our organism - by fAst.
we should EAT slowly .
and I will CHECK all his ADVICE

Po angielsku nie mozna "byc na spotkaniu"

I took part in an interesting meeting.
The subject of...
The meeting was chaired by......in his field.
...interesting things about healthy lifestyle.

eat too much, but instead we should try and clean our organizm by fasting.

I will try to follow his advice myself