sirhoff said:
Crossfit sounds really cool. I wish I was going to be using a gym for it but I'm not. What exercises would you recommend for those with nothing but themselves and simple props (and that sounds as fun as possible

). And that focus on abs and glutes? Tabata squats, Burpees . . .
burpees
squats
lunges
step-ups
mountain climbers
lateral hops over obstacle (you can use anything for the obstacle, just make sure it is between 6-12 inches in height.A length of rope works well also)
forward/backward hops over obstacle (same as above)
box jumps (these are performed standing in front of a 12-24" box and you jump up onto the box then step down and repeat.You can stand at the foot of a stairwell or stairs and jump to the 2nd or 3rd stair if you don't have a plyometric box)
supermans (lie facedown on the floor and simultaneously raise the arms and legs and hold this position for 5 seconds, squeezing the glutes and low back)
superdogs (kneel on all fours and extend right arm and left leg.Hold this position for 30 seconds while squeezing the glutes and low back.Return to all fours then extend left arm and right leg.Hold and squeeze.Alternate back and forth for the desired reps)
planks (support your bodyweight with your elbos and toes, contract your abs and hold for 60-120 seconds)
reverse hypers (lie face down on a high bench, table or platform with your hips at the end of the apparatus.Raise your legs up so your body forms a straight line and contract your glutes and low back, lower your legs and repeat)
short sprints or shuttle runs
stair sprints
Switch your sets and reps scheme up a bit.You already know about Tabatas (20 seconds on/10 seconds off for a minimum of 8 intervals each)
Look at ladders.With this technique (introduced recently by Pavel Tsatsouline), you use an ascending rep scheme with either fixed or increasing rest intervals.Taking squats as an example:
Ladders with fixed rest intervals-
10 squats, rest 30 seconds
20 squats, rest 30 seconds
30 squats, rest 30 seconds
etc, etc, etc.
Work up until you don't think you can complete the next rung on the ladder.Then rest a minute or two and start back at the beginning.Do as many ladders as you feel necessary.
Ladders with increasing rest intervals-
10 squats, rest 10 seconds
20 squats, rest 20 seconds
30 squats, rest 30 seconds
etc,etc,etc.
You can also implement circuits and super sets into your routine as well as a form of variety.
Hopefully I have given you a few more ideas you can use.Anyway, I have to get back to the books.Good luck.