You must be joking! Have you tried exercising with surgical mask or N95 respirator? I train regularly with N95 since Omicron started and they definitely negatively affect airflow and aerobic exercise performance. N95 respirator even more than surgical mask. I am used to them and don't have anxiety, but they aren't comfortable at all. They also affect temperature of air that you are inhaling as it mixes inside the mask with the hot air that you exhale, increasing your rest and cooldown time.