One year a go I started a buteyko cursus with a instructor, I realy believed in that this would work to finally improve my health... I started with a cp of 15-20 seconds, and worked my way up to a morning cp of 40 seconds, what did I gain? Well I only gained a higher cp, thats all... my acne is just as worse as one year a go, mood and energy levels are just as bad, my hypoglycemia symptoms are just as bad, my dizzines is increased, also sweaty palms and anxiety is gotten even worse, I also developed cavities for the first time in 10 years! I also feel colder and I developed this weird heart palpitations thing what I get now and then... so if there are here people thinking of also to do a buteyko course, just dont... dont be as stupid as me its just another scam to get your money...