You must not use the Vibrapower Life without your doctor's consent if you are pregnant, have has a recent operation or surgery, have knee, shoulder, back or neck injuries, or retinal conditions. You are strongly recommended to consult your doctor before using the Vibrapower life if you have any of the following: heart condition or cardiovascular disease, high blood pressure, acute thrombosis, acute hernia, severe diabetes, epilepsy, severe migraines, malignant tumour, a pacemaker, implants, artificial joint (s) or limb (s), stents or iuds, metal plates or pins, any recent illnesses or infections, deep vein thrombosis or cancer. Discontinue using if you experience dizziness, nausea, shortness of breath, pain, or any other abnormal symptoms. Consult your doctor before beginning this or any exercise or diet programme. Follow the warm-up exercises before you commence your workout. Increase speed, intensity & duration of exercises gradually.