Jump rope for two minutes rest for one minute.
Can you continue this for thirty minutes?
This is just twenty minutes of cardiovascular exercise.
Go for it!! If you have considerable jump rope experience,
"double under" for two minutes rest for one.
Anyone who can keep this up for thirty minutes is an extraordinary athlete.
Jumping or skipping rope is a good tool for developing cardiovascular and
respiratory endurance, stamina, coordination, agility, accuracy, and balance.
(This is six of the ten adaptive components.)
Here is a simple little site that reviews some of the basic to advanced jump rope
skills that you want to play with.