Hi everyone, my name is Dan, I just started getting into this sport this summer. I consider myself to be in decent shape, I played varsity lacrosse and ran at least four miles a day for most of this summer. On my first ride I went about 5-6 miles and had to turn around to go home because I was having horrible stomach cramps. It took about half hour for them to go away, but now it feels almost like my lungs are cramping up. Is this something that my body will get used to? Or am I doing something wrong? Let me know.