Can Nucleus be used at any age?
Yes, Nucleus is designed to have ZERO impact on the joints, so it is good for all ages.
Can I fly with Nucleus?
You absolutely can fly with Nucleus.  Just make sure to pack Nucleus in your luggage, not in the cabin due to the liquid blend inside of Nucleus being over 3.4 oz.
What is the difference between Nucleus and a kettlebell or any other type of weight?
Nucleus is not a weight, it is a dynamic and adaptive core training system based on Liquid Impact Technology.  The faster you move it, the more kinetic energy you generate inside the device and the more resistive force that impacts all of your muscles at once.  Compared to kettlebells and weights Nucleus offers all levels of users a dynamic full-body workout in a portable form factor that can be used at home or on the go.
Is there only one weight?
Yes, there is only one weight (5 lbs - 2kg).  Nucleus adapts to your condition.  If you want a harder workout, you just need to move it faster.
Can I train longer than 12 minutes?
The Nucleus Method is based on HIIT which utilizes intervals of work combined with intervals of rest.  If you execute the exercises correctly, 12 minutes will be more than enough time to get a complete workout for all of the muscles. 
Is Nucleus patented and copyrighted?
Nucleus has worldwide utility patents and copyrights issued and pending.