Sunday afternoon, a motorcyclist was critically hurt in Odessa Township. 

Sheriff's deputies say it just before 2 p.m. that the as-yet publicly unidentified  25 year old man tried to stand up on his seat while the bike was moving north bound on Jordan Lake Road. 

Deputies indicate that worked. 

However, in sitting back down, the driver was thrown off the moving cycle and was sent to a hospital in Grand Rapids "with serious life threatening injuries."