POWERbreathe - Breathing Exercise Device, Breathing Trainer and Therapy Tool to Strengthen Breathing Muscles and Help Lung Capacity, Handheld Inspiratory Muscle Trainer - Black, Heavy Resistance

This device does, indeed, increase the strength of respiratory muscles. More importantly, it aids in overcoming periods of low blood-oxygen--a major source of dementia.

Tenía mis dudas de si esto realmente funcionaría pero a las 4 semana de uso pude elevar mi VO2 Max de 39 a 41, ocho semans despues mi VO2 max elevado a 44, a las 2 semanas de uso corrí 10K con un tiempo de 59:47 a las 4 semanas 10K a 55:27. no es un elemento milagroso, pero es el perfecto complemento de tus entrenamientos, si lo usas como debe ser 30 inspiraciones en la mañana y 30 en la noche, no falla. encantado con este producto. cabe decir que inicié con nivel resistencia 1.5 y apenas voy en nivel 4 falta mucho por mejorar y mucho que aportar.

1st order was opened and the box destroyed.Replaceme t item was in no better condition i had to order direcrly from factory to ensure i purchased a new unit, since this device is meant to be breathed through i think its important for it to be new without doubt.

Good for practice

Using to build endurance for exercise and so far it seems to work well. If you are new to using a trainer like this, go slow or you will be sore just as you would with any other exercise.

The reason its just OKAY (as per a 3-star rating) is bc of the size. There are comparable products that are 1/2 the size.

Funciona a los pocos días de uso se nota la diferencia de puede respirar mejor

The product is in great condition!