Two longtime Summit County physical therapists believe recovery doesn’t have to happen only in a doctor’s office. That’s part of the idea behind a new dual business in Frisco that combines the debut Zena Physical Therapy center with the Colorado-born franchise Light Lounge, which offers red light therapy targeted at physical recovery, pain relief and skin rejuvenation. Located at 323 W. Main St., Suite 101B, the businesses launched Tuesday, Ju…