My dad's oxygen levels are fluctuating between 94 and 97. It usually drops a bit after dinner and tends to be higher around noon. He's got asthma, so I'm wondering, would it help if he took steam and did breathing exercises like Anulom Vilom? Any suggestions on how we can improve his oxygen level?

Patient is advised deep breathing exercises,jogging,swimmingquit smoking,eating healthy diet,drinking plenty of water, can improve oxygen saturation.