4 to 6 hours for me. My shifts are 12 hours nights. I hate coffee, so I cant depend on that stuff. I do sleep 8 hours on my days off though.
15 F36 435i Gran Coupe M-Sport Estoril Black Dakota Leather, ZM2, ZDA, ZDB, ZLP, ZPP, ZTP, Heated seats, HK sound MODS Gloss Black 19" 442M, ///M Performance: Rear Color Matched Diffusor, Black Grille, Gloss Black OEM Trunk Spoiler, Floor Mats & Rocker Panel Decals, Painted IND Reflectors, Black Tailpipes, 3M Bra, 20% Tint, Black COA Frame