What are these lines under my eyes? (Photo)

The other name for this condition is called a tear trough. Depending on your examination, injectable fillers may be considered for improving upon your under eye appearance. I hope this helps. Sincerely, Dr Joseph

From the looks of it, probably fluid retention or allergies are precipitating the eye bags noticed in the second picture. Face yoga definitely cannot worsen and at the same time, it cannot be beneficial too. If you're asking about the very fine lines under your eyes, these creases are a result of the aging process.