Is it ok to exercise right before getting lip injections with Juvederm?

This should not  be a problem as long as your heart rate and blood pressure are back to normal.  Head lowered exercises after injection can cause additional swelling

Yes, it is okay to exercise before getting lip injections. However, it is advised that you should not exercise immediately after for 12-24 hours.

I prefer patients to exercise prior to injections as opposed to immediately after although exercise may increase blood flow and blood pressure temporarily it usually returns to normal in a short period of time.  Following injections I prefer that patients wait twenty four hours before engaging in strenuous exercise to minimize swelling.

It is completely fine to exercise prior to your lip augmentation. However, you should refrain from exercise for a short period after treatment since this can lead to additional swelling. 

I am ok with exercise before fillers. I usually tell patients to avoid it a day or two afterwards to allow it to settle in, in the lips it usually doesn't move very much.