Every Day & Everyday
This mistake is again an easy one to make. Many children are taught incorrectly by teachers in elementary school that the word “everyday” means that something happens each day.
This is incorrect. The word “everyday” actually means common. When you want to talk about something that happens each day, you need “every day”.
“I eat an apple everyday every day to stay healthy.”
“My mother walks the dog in the forest everyday every day.”