Surprisingly the answer to your question is quite involved. I will answer it from a freedivers point of view. First of all, holding your breath has different effects depending on what circumstances you do it under. When you exercise normally your breath will increase as a response to the increased levels of CO2 in your blood.
February 14 is celebrated as St. Valentine's Day in various Christian denominations; it has, for example, the rank of 'commemoration' in the calendar of saints in the Anglican Communion. In addition, the feast day of Saint Valentine is also given in the calendar of saints of the Lutheran Church.
February is a special month with significance touching the secular, romantic, and spiritual realms. First, it is the shortest month of the year. This yearâs span is only 28 days. Also, Valentineâs Day falls on the 14 th of this month. Most of us will forget this romantic day until it is upon us a week or two before the the14 th; remembering just in time to send candy, roses and cards filled with human expressions of love and devotion to our true loves.