Life is complicated these days but when it comes to working out, simple workouts done hard are the fastest way to get the best results.
1. Eliminate most isolation exercises. These are exercises that essentially work only one muscle at a time. This would be exercises like leg extensions, tricep "kickbacks" and ab crunches. Leave the more complicated stuff for later and Yes, I did say ab crunches, stay with me here!
2. Focus on compound exercises (exercises that work many muscles at a time) like squats, standing overhead presses, pull-ups, bench presses, stiff legged dead lifts, and dips. BTW --squats do far more to strengthen and shrink your waistline than crunches will ever do!
3. Do the six exercises above three times per week. Monday-Wednesday-Friday or Tuesday-Thursday-Saturday. 2-3 sets and 6-20 reps each. And remember to do each rep slowly, I am talking four seconds on the way up and 4 seconds back down.