Used to spend 8-10 hours a day and 15-16 during peak season days. Have slowed down after my baby was born 6 months back.
I have no life 14 hours a day, every day. the rest of my day is for eat, sleep. I plan to live in this way till I get my day earning to 1000$ a day.
Waste your health for earning more money, then you'll be wasting your money to gain back the health. JUST IMHO