Why don't you take a day off so that you recover properly / will / shall recover

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello.

What is the difference in meaning? I can’t understand when I have to use So That with An ordinary verb, Will and Shall.

-Why don’t you take a day off [color=red]so that you recover properly / will/ shall recover properly?.

Thanks.

2

Actually, my choice would be: …so that you CAN recover properly.