Stomach Flu – vomited so hard I strained muscles in my back and tummy area and in my legs. I actually strained muscles!!! God I was dead for two-three days. Lost over 10 pounds was seriously dehydrated – couldn’t keep water or gatorade down for almost two days. This worked its way through my kids first (they didn’t get as sick) then me and then my wife. Better now and will finally run again today. 25th.