I would really appreciate if you teachaught me how to express it.

I've suffered from a severe pain through my whole body since I joined a practiced at badminton club two days ago.

I had joinedplayed at the club once a week before the pandemic was spread.

Now, I'm lack of can't exercise.

Otherwise, if you want to say, "I haven't exercised in a long time and it's more difficult to exercise now," you can say "I'm out of shape".

I really appreciate if you can teach me how to express it.

According to my sources, people seemed to use "sore".

I've suffered from a severe pain through my whole body since I joined a practice at badminton club practice two days ago.

I had joinedve went to the club once a week before the pandemic was spread.

Now, I'm lack ofing exercise.

It is hard for me to go up the stairs.

I’d really appreciate if you teach me how to express it.

According to my sources, people seemed to use "the word “sore".

I've suffered from a severe pain through my whole body since I joined a practice at badminton club two days ago.

I had joinedgo to the club once a week before the pandemic was spread.

Now, I'm lack ofing exercise.

Does "Muscle pain" make sense in English?

It does, but we'd rather say something like "My muscles are sore" or "I have sore muscles" . Muscle pain sounds serious, like you have to go to the hospital.

I would really appreciate it if you teach me how to express it.

According to my sources, people seemed to use "sore".

I've been suffereding from a severe pain through my whole body since I joined awent to practice at a badminton club two days ago.

I had joinedplayed with the club once a week before the pandemic was spread.

Now, I'm lack of exercisout of shape.

"Out of shape" is a phrase when we say "I have not exercised in a while"

It is hard for me to go up the stairs.