Working out an old body

I recently went and worked out at the gym, actually it was this morning, and I began to lament my body's rapid aging. I have generally been in great shape all my life until about 4 years ago, then I gradually allowed myself to sleep a bit more, and generally lay on the couch all the time. It wouldn't be such a big deal to me if so much of my life hadn't been defined by my brut physicality, like take for instance fighting....

I used to bounce at a couple of bars, and I was never huge or intimidating really just strong and capable, so all my friends look to me as the 'alpha male' whenever our group is threatened which I have done a few times in the past and the situation never escalated into anything serious so I have been effective. Now I am afraid that if I were to start brawling with someone I would be handed my ass to wear as a cap while they threw me through a window.

Now I am working out again, and trying to roll back the past few years of laziness and Reeses' -oh so delish- peanutbutter cups perhaps someday I will be able to get off the couch and retrieve the remote without breaking a sweat and panting like a llama.