So we talk a LOT about keeping our dogs fit, and there are some human diet threads, but what about our physical conditioning? I fell off the C25K wagon this fall when the weather went to crap and haven't managed to get back into it again. That, combined with a desire to get Kes' endurance title (AD - 12 miles at 8mph with handler on a bike, dog running alongside) spurred me into bike shopping and today I came home with a used mountain bike from CL for $40. I took it out on our street (slight incline), rode for about four tenths of a mile and I am BEAT. I can run/walk a 5K in about 30 minutes, can rollerblade 5 miles in about 45 minutes, and can hike a 9 mile mountain trail, but four tenths of a mile on a bike kicked my butt?!?! LOL So how is everyone else staying in shape?