It Has Been Made Clear...I Am Painfully Out Of Shape!

This Monday evening my Auto 66 posse Tristram and Doug descended on my home, and we fired up the "Big Irons" for the first time in over a decade. It felt GREAT to interact in real time with these guys. What the session pointed out in black & white is I'm out of shape. When Doug launched into the fastest tune in the Auto 66 repertoire (Thanks Doug!) I lasted about 3 minutes before melting down and just stopping (insert out of breath gasping sounds here). SO, grateful for this data point I am looking to work on stamina. My plan is to play along with my iPod on Shuffle. Whether a Chopin Etude, The Ventures, Mastodon, Kirsty MacColl, NEU!, a Beethoven symphony, James Brown, Captain Beyond, Lee Fields, Steve Roach, Steve Reich, Funkadelic, Judas Priest...this will be my metronome and context source. I think this sounds like fun. Any drummers care to weigh in on this?