Do Sun or Mars Spiritual Squares for perfect vitality, the rest of these things will no longer be necessary. Your body and immune system will become extremely resilient to any potential ailments. Check your natal chart to see if you have any afflictions on your Sun as well.
Ensure you are at least exercising to some capacity every few days, and that you are eating wholesome and complete meals. In addition to this, take a multivitamin.
Beyond that any sort of tricks or other small things are largely rendered irrelevant by doing this.