Anybody here get any head pain while using MK-2866 (Ostarine)? I noticed that at 10 milligrams I feel fine, but once I increase it up to 20 milligrams my head starts aching. I also feel a bit lethargic, Does anyone know if the lethargy and headache will go away and will I start to get the sense of well being, because I've read that it's one of ostarine effects?