Not sure if I'm posting in the right spot but I am looking to complete a Century in about three weeks (Ride for Ronald, Orlando) but seem to hit a wall around 70mi. I feel like I have the energy and I'm somewhat comfortable but my back will tighten up and my legs will start cramping up especially while climbing. Yesterday was pretty bad, around 64mi in and almost to the car my legs were cramping so bad I had to stop and stretch to continue. It was really hot yesterday and I took a different route that had much more climbing than I'm used to and at one point I found myself without water and on the verge of heat exhaustion (poor planning/never again). My thinking is that I obviously need to keep hydrated first and foremost but is there any supplement,additive, or food that will help reduce the cramping? Does eating certain foods the day before help prepare your body for the stress it will be under the next day?