My thoughts on the video craze are the same as you alluded to. They become boring very quickly and lets face it if you not enjoying it then it sucks. Plus I believe in lifting heavy weights. The fountain of youth is lean muscle tissue and the only way to increase your LMT is to create a large enough response on the muscle that requires it to grow, which means you have to lift heavy. Pushups, pullups, gymanstic moves, etc are all solid training tactics. But nothing beats deadlifts (directly correlates to sledding), back squats, single leg squats, heavy pulling (bent over rows, cleans, swings, etc), and pushing, chest pressing, overhead pressing, snatching, etc. Plyometrics are another really important tool in conditioning.
In the end the important thing is to find something that works for you. There are million different workout programs and while I would encourage everyone to work with a trainer, finding a good one can be an issue. There is a term in my industry called self moderate progression, which basically means listen to your body, you live there I don't, if something doesnt feel right then dont do it. Learn your body type and the problems that you have in mobility and stability and work on those, use a foam roller, warm up correctly, and pay attention. If you keep those things in mind you will go along way to staying healthy which is the ultimate goal as we age.
