Juice bars
What are three ingredients that are sometimes used as "boosters" for beverages at a juice bar?
Juice
 bars. A juice bar is an establishment that primarily serves prepared juice beverages such as freshly squeezed or extracted fruit juices, juice blends, fruit smoothies (a thick fruit drink, often iced), or other juices such as fresh wheatgrass juice. Sometimes other solid ingredients or nutritional supplements may be added as boosters, such as fresh bananas, eggs, nuts or nut butter, bodybuilding supplements, soy protein powder or others such as whey or hemp protein powders, wheat germ, or Spirulina (dietary supplement) or Chlorella. Also if less juice is used with these same ingredients drinks called health shakes may be produced. Juice bars share some of the characteristics of a coffeehouse, a soda fountain, a café, and a snack bar. Juice bars may be stand alone businesses in cities, or located at gyms, along commuter areas, near lunch time areas, at beaches, and at tourist attractions. In Mexico, juice bars have become more popular in recent times. Mexican juice bars will often sell healthy beverages and snacks that are popular in Mexico.