Official Webpage of A.Tanzadeh, Kyoshi 8th Dan

Training Sanchin combined with Kaatsu method.

Kaatsu (加圧, often styled as KAATSU) is a patented exercise method developed by Dr. Yoshiaki Sato that is based on blood flow moderation exercise (or vascular occlusion moderation training) involving compression of the vasculature proximal to the exercising muscles by the Kaatsu Bands.

KAATSU is Japanese and literally means “additional pressure” — additional (“ka”) pressure (“atsu”). 
Kaatsu bands also calls “Blood Flow Restricted” or “Occlusion” bands.