I’m looking for advice on what to wear when running in 40 degree weather. I’m used to running in cooler temperatures, so I’m not sure what is the best way to dress for this kind of weather. I’m worried about being too hot or too cold, so I’m hoping to get some guidance on what to wear. I’m thinking that I should wear something light and breathable, but I’m not sure if I should layer up or not. Any advice would be greatly appreciated!