Here's an example of 'minute-on-the-minute' workout. The basic idea of this very efficient format is you perform a set at the start of every minute. Pre-defined number of reps!!
Do the reps quick you rest more. Slow means less rest, ouch. Up to you. Put more reps to the workout and it gets tougher. More weight the same thing. Lots of different possibilities!
You can copy & paste this whole post (yes, as plain text!) to Kutya Timer for iPhone and iPad and tap 'Start' to begin exercising. Set number of rounds to six to get a 30 minute tough sweaty workout. Deadlift weight with which you can do say 20 reps. Choose a relatively heavy kettlebell. Enjoy!
01:00 8 Deadlifts
01:00 15 Kettlebell Swings
01:00 15 Push-ups
01:00 8 Burpees
01:00 15 Air Squats
Kutya Timer for the iPhone and iPad on App Store