Immunity cannot be boosted as a quick fix.
Some tips are below -
1. Early morning - walking, exercise, yoga (activates the lymphatic system) and Pranayama will help to keep up the Prana level. This will give energy for the whole day
2. Watch out the food - Chew well, Make it vegetarian and make it more colorful
3. Watch out the sleeping hours - "Early to bed and early to rise" - will help to detox well
4. Hydrate yourself well and reduce the hours with the gadgets
Karma or action is the ultimate. One cannot escape from action (Karma yoga)
1. Thamas - yoga stretches
2. Rajas - Pranayama, Sudharshan Kriya and breathing techniques
3. Sattva - Meditation
Starting the day with the daily sadhana and doing meditation to keep up the sattva is mandatory while doing the work.
Also the knowledge is to be applied for every action (Gnana yoga)
1. Not to desire for the fruit of action
2. Not to get deluded by the desire
3. Also not get attached to inaction
4. Give one's 100% in the work
5. Everything is done by the prakrithi. So drop the doer-ship.
Looking at the power of the divine which is omnipresent, one has to become humble and then do the action (Bhakti yoga)
1. Be grateful for whatever he has got and is experiencing
2. Be devoted to the ultimate
3. Have a complete surrender to the ultimate divine
Kriya yoga
If the mind is tied with the body - yoga
If the mind is tied with the breath - pranayama
If the mind is tied with the soul - meditation
Gnana yoga
If the mind is tied with the intellect - knowledge
(only with the proper knowledge, intellect can function better)
Karma yoga
If the mind is tied with the action which clears memory - Seva
Clearing of impression happens when we do seva, thoughts about oneself is gone and we start taking care of others. This clears the memory.
Bhakthi yoga
If the mind is tied with the ego - Satsang
Bhakthi or surrender to the ultimate
Mind is the gateway of everything.
Clearing and streamlining input impressions is through kriya and Gnana yoga. This could be done alone.
Clearing and streamlining of output impressions is Bhakthi yoga and karma yoga. For output, we have to do to others.
S: Saha Ramaha 
(Sanskrit)S:
(Sanskrit)S:
