biking, crunches

I have been biking most weekday mornings, but I haven't been doing any situps or crunches. I bought an excersize ball, now I need to blow it up & use it. My last one became our family beach ball. It's starting to warm up here, but the evenings and mornings are still comfortable. In a few more weeks we will be sweaty and hot all the time. Come April we will be in a virtual sauna, lose our appetite, it will be hard to do anything that month because of the intense heat. Thai schools have their break that month, it is too hot to do much.