Antonyms for the phrase "am out of breath" could include words such as relaxed, calm, and composed. These antonyms suggest a state of ease and peace rather than a feeling of being short of breath. Other antonyms might include energized, invigorated, and refreshed, indicating a state of vitality and vibrancy rather than exhaustion. Words such as rejuvenated, renewed, and revitalized suggest a sense of being restored and reinvigorated, rather than depleted and depleted of energy. Overall, these antonyms provide a contrast to the feeling of being out of breath, signifying a state of calm, relaxation, and energy, rather than fatigue and exhaustion.