Patient those are critically ill or ventilated or at bed rest having immobilised on bed muscle thinning and atrophy begins to minimise the negative effect of immobilisation which may lead to prolonged hospitalisation or post-hospitalisation mobility impairment therefore early mobilization with physiotherapy is done by a trained and qualified physiotherapist, also due to chest issues there may cause increased secretions in lungs which may in increase the chance of infection and difficulty in breathing, specialized chest physiotherapy helps in this.