Vedas are the "First Source" of wisdom. They represent the Eternal Knowledge. But when we convert them into Auditory senses, they represent certain sounds. Nothing in vedas is opposed to Science, Logic & Reason.

Literally Yoga means union. Yoga is not a system of beliefs. The goal of Yoga is to see unity across all classification. Yoga works primarily with the energy in the body, through the science of Pranayama, or Energy-control.  

Ayurveda means “Knowledge of Life" Ayurveda places great emphasis on prevention and encourages the maintenance of health through close attention to balance in one’s life, right thinking, diet, lifestyle and the use of herbs.