Starting small and progressing gradually

The speaker talks about starting his morning with a healthy breakfast that included wild blueberries, steel-cut oats, raisins, and almond milk. He then mentions treading water for 15 minutes and feeling zonked afterwards, acknowledging his low cardio endurance. Despite starting with 15 minutes, he plans to gradually increase the duration, inspired by a friend who also started with 15-minute increments. The decision to tread water was spontaneous, as the speaker woke up early in a hotel with a heated, empty pool on a cold day.