It's not rating a minimum power or a recommended power. Most 100-watt car speakers will work perfectly well on factory radio outputs, and you aren't going to do them any harm by trying them out. (Ignore anyone who tells you that you can blow any speaker by using it with too low power an amplifier; this is not true).
Ujjayi breath. Ujjayi breathing is a breathing technique employed in a variety of Taoist and Yoga practices. In relation to Yoga, it is sometimes called the ocean breath. Unlike some other forms of pranayama, the ujjayi breath is typically done in association with asana practice.
Kussmaul's sign. Not to be confused with Kussmaul breathing. Kussmaul sign is a paradoxical rise in jugular venous pressure (JVP) on inspiration, or a failure in the appropriate fall of the JVP with inspiration. It can be seen in some forms of heart disease and is usually indicative of limited right ventricular filling due to right heart dysfunction.