Cut six to eight small slits in turkey skin; insert garlic between skin and meat.
Squeeze two lemon halves inside the turkey and leave them inside.
Squeeze remaining lemon over outside of turkey.
Spray turkey with nonstick cooking spray; sprinkle with rosemary and sage.
Place on a rack in a roasting pan.
Bake, uncovered, at 325° for 1 hour.
Cover and bake 2-1/2 to 3-1/2 hours longer or until a meat thermometer reads 185°.