Yos

You can stretch while you are watching TV and the commercials are on, while you wait for the chicken to thaw, while you talk on the phone, or ... you get the idea. Also, and hour is all you really need (if your workout last more than an hour, I would say you a resting too much). I suggest you experiment with many forms of exercises (calisthenics, weights, jump rope, running etc etc) and find one that you find which are somewhat fun. It will be easier to stay consistent- which is the key, my friend.

The Jujitsu class I attend is taught by my sensei who, while doing jujitsu for many years, also competed in judo. I would say we're almost a judo class. I can only make an assumption really. Based on reading serveral judo books, I cant recall any material about the changing of techniques. So I would have to say No, the general judo class probably doesn't cover techniques beyond the sport form. Of course I'm not basing that off observing judo classes - so I could be wrong.

One thing I would like to add, Some foot sweeps were altered when Jigoro founded Judo. This may be common knowledge to some of you, but its important to remember. Techniques like De Ashi Harai (Advanced Foot Sweep) and Hiza Gurama (Knee Wheel Throw) were changed to blocking the joint instead of stomping through the joint. I once asked my sensei would those techniques be effective if an attacker was trying to punch my lights out and he told me that. Jujitsu can be brutal...