Whenever we take time off from training and rest, many of us feel guilty, including myself. It's been programmed in our lives to be on the go, to always be doing something productive, and make the most out of each day. I think we all forget that sometimes making the most of the day, is to actually doing NOTHING.
By doing nothing (in terms of training), and just relaxing and eating good food, we recover and refuel our body efficiently. When we recover properly, we end up being able to train harder, better, and faster, for the next time! Therefore, be happy on your NOTHING days, they're actually more productive than you think.
...so relax, and rest up! ;)
When most people use the term cardio training, they refer to running on the treadmill, spin classes, or using the cross trainer. What most people don't realize is that these can be ineffective cardio training tools at times, as your body develops resistance to exercise quite rapidly, and your body demands change and further exhaustion to get results.
So if you routinely use the same cardio equipment, change it up. Not only can you change your cardio routine by changing equipment, but you can change it by NOT using equipment and use your body weight!
Star Jumps/Jumping Jacks are a GREAT cardio work out that DO NOT require you to use fancy equipment. Building your endurance on these will tone you up fast!
Jump Rope (only a rope) will improve your agility and will help get your heart rate up!