Hi. My Dad just collapsed. He said he was having a charliehorse in each leg, stood up to stretch them out and then passed out. My mother and I ran upstairs, called 911 and rushed to his aid. He was clammy, he couldn t sit up, the 911 dispatcher told me to move him on his side. He was in a lot of leg pain. Emergency helpers showed up, took his EKG and everything appeared to be normal. My dad is very healthy at 62, drinks 12-14 cups of water a day and often rides his bike to work. The medical staff suggested he go to the hospital, yet he refused. I am worried about him. What do you think is going on?