I crashed last summer -- luckily, my next door neighbor is an ER doc. He met me on the driveway, poked to make sure my kidneys and liver seemed okay and I hadn't punctured a lung, then said basically what everyone else said -- just take it easy, try not to laugh/cough/sneeze/breath deeply. Mine took about 6 weeks to get better. Didn't know if it was cracked or bruised, but didn't seem to matter.