When using Kangoo Jumps for the first time you will easily feel out of breath. After only a few days of use you will be amazed by the significant endurance improvement.

This is confirmed by a recent University Study of British Columbia, conducted by Dr. Jack Taunton, professor of medicine and director of the Allan McGavin Sports Medicine Centre: runners wearing Kangoo Jumps increase their endurance (VO2 max) by 18.3% whereas runners using normal shoes showed no significant increase.

See university study:

Effects of a 12-Week Aerobic Training Program Utilizing Kangoo Jumps