How can I tell? My skin is dryer and getting wrinkly. I have all the garden variety spots, moles and tags all over my body. My face shows its age and sun exposure. I have difficulty getting up out of the chair and cannot get off the floor anymore. My skin sags here and there. And the big one..at all these doctors appointments I have to write down my birthdate. Each time I do I am reminded I am 60 years old!