I was leaving the gym to home, theres a footpath i have to cross to get to the carpark to get home, on that short ride the footwath is shaped as waves so i didnt realised until it was too late when my back tyre touched the grass. Ass the law of moment followed, less grip on my back tyre made it go faster than my front tyre. Head first for me into the ground, good sized crack in the helmet and a huge bump appeared on my face, after a week it finally settled and turned a nice shade of green and yellow, thankfully i was about to buy a better helmet a few days later. No damage to the bike, now im glad its a steel fame.