Would I be able to, say, sit down to do sit-ups and push-ups until I could warm up and resume hobbling. It'd be tough. The muscles in your arms are much smalle

Would I be able to, say, sit down to do sit-ups and push-ups until I could warm up and resume hobbling. It'd be tough. The muscles in your arms are much smaller than your legs. They produce less heat and induce less cardiovascular activity when working. Try getting your heart rate up without using your legs. It's hard. Hope you're not doing this someplace isolated.