I'm a glutton for punishment. for the next week or two, I'll be going to the gym twice a day -- once in the morning for my regular training and once in the evening to teach my wife a 4-day split. Our splits are the same, though our exercises are different. Soooo ... I hit a machine-based chest/tri day along side her this evening. Everything was going well until the overhead triceps extensions at the end. Damn. That's what I get, though.
Teaching her the machines, form, etc., I am reminded why I hate machines so much: they constrain your body's natural mechanics. Incline bench on a machine is so ... so ... unnatural. Oh well.
Anyway ... tomorrow is back day. Yay.