on heavy days (3x4) 85% max. sometimes i get real light headed on dead lifts and i start seein sparkles. u can say im a newbie but i was just wanderin if this is bad for myself. maybe its cuz im over doing it? its no big deal really n it probably wont affect my lifting routine because im trainin my ass off cuz its will be my last year of high school football. so basically im askin if this is normal for people who are just simply training their hardest.