Of course Yoga gives ideas how to stay healthy. Yoga prescribes four major approaches to a healthy living. Ahara, healthy diet, vihara, a healthy and spiritually conscious lifestyle, bhavana, healthy and positive attitudes towards oneself and the world, and finally sadhana or abhyasa, practices which include engaging the body, breath, and mind. In sadhana we have tools such as asana, pranayama, mudra, etc.
By practicing all the four we use a holistic approach to regain holistic health. The greatness of Yoga is that it offers a multidimensional approach to healthy living with a multitude of tools. Yoga also teaches us that we have to find tools that are appropriate for us, considering different parameters such as our age, our stage in life, our capacities, the seasons of the year and other such individual centric parameters. Thus for optimum health each individual needs to adopt a personalized practice. The theory of one size fits all doesn’t work for Yoga.