Nutrition forms the foundation of all training, therefore the choice to keep one font family highlights this aspect. Restoration of strength is a gradual process in parallel with consistency; it is not a one-hour, one-day, or even one-month miracle it takes time to accomplish or come to you your goals. This strength gaining process is expressed by using different font weights. And, this visual hierarchy from thin to bold to heavy usage of the font-weight shows that affective brain training is spiraling around consistency and step-by-step short/small target accomplishments. Hope you will like the idea. Thank you.