Ключевые слова: ache, african, american, backache, bad, black, chair, computer, desktop, electric, employee, female, girl, gun, jamaica, job, lady, machine, massage, medical, medicine, nigeria, office, pain, pc, physical, physiotherapy, posture, recovery, rehab, sit, sitting, sport, stimulation, stimulator, stress, therapy, toning, training, treatment, using, vibration, woman, women, workout, workplace, young,