An arrangement for subjecting a person's body to the transmission of low frequency vibrations, the arrangement comprising: - a flexible, resonatable base member , which has a first side and an opposite side, - a plurality of vibrator elements mounted on said base member on its first side, said vibrator elements being capable of converting an electrical impulse into a pulse of mechanical vibration, and - a data processing unit arranged to produce a control instruction for setting up an electrical impulse train, which electrical impulse train is convertible into a respective mechanical vibration pulse train using said vibrator elements so that due to such conversion the opposite side surface of said base member transmits to the body - or to a selected part of the body - of the person low frequency mechanical vibration consisting of successive pressure pulses of mechanical vibration, - a mattress, said base member being a flexible base member of said mattress, inside which mattress the vibrator elements are embedded within the base member , - the mattress is topped with upholstery or cushioning, through which said mechanical vibration is conducted to said body or selected part of body of the person, and - the pressure pulses make up a first vibration component and a subsequent second vibration component, of which -- the first vibration component comprises a plurality of consecutive pulse trains, each pulse train having a respective constant vibration frequency within the range 20-50 Hz and a contact power with said body or selected part of body within the range of 40-70 dB, -- the vibration frequencies of said consecutive pulse trains in said first vibration component change monotonously from one pulse train to another in said first vibration component, and -- the second vibration component comprises at least one pulse train in which the frequency of the pressure pulses fluctuates within the range 20-50 Hz over the course of 2-10 seconds. - a flexible, resonatable base member , which has a first side and an opposite side, - a plurality of vibrator elements mounted on said base member on its first side, said vibrator elements being capable of converting an electrical impulse into a pulse of mechanical vibration, and - a data processing unit arranged to produce a control instruction for setting up an electrical impulse train, which electrical impulse train is convertible into a respective mechanical vibration pulse train using said vibrator elements so that due to such conversion the opposite side surface of said base member transmits to the body - or to a selected part of the body - of the person low frequency mechanical vibration consisting of successive pressure pulses of mechanical vibration, - a mattress, said base member being a flexible base member of said mattress, inside which mattress the vibrator elements are embedded within the base member , - the mattress is topped with upholstery or cushioning, through which said mechanical vibration is conducted to said body or selected part of body of the person, and - the pressure pulses make up a first vibration component and a subsequent second vibration component, of which -- the first vibration component comprises a plurality of consecutive pulse trains, each pulse train having a respective constant vibration frequency within the range 20-50 Hz and a contact power with said body or selected part of body within the range of 40-70 dB, -- the vibration frequencies of said consecutive pulse trains in said first vibration component change monotonously from one pulse train to another in said first vibration component, and -- the second vibration component comprises at least one pulse train in which the frequency of the pressure pulses fluctuates within the range 20-50 Hz over the course of 2-10 seconds. <EOS>