TopRq.com

Cave diving is a type of technical diving in which specialized SCUBA equipment is used to enable the exploration of natural or artificial caves which are at least partially filled with water. In the UK it is an extension of the more common sport of caving, and in the US an extension of the more common sport of SCUBA diving. It is much more rarely practiced due to the skills and equipment required, and because of the high potential risks...

Parkour (sometimes also abbreviated to PK) or l'art du déplacement (English: the art of moving) is the physical discipline of training to overcome any obstacle within one's path by adapting one's movements to the environment. It is a non-competitive, physical discipline of French origin in which participants run along a route, attempting to negotiate obstacles in the most efficient way possible, as if moving in an emergency situation...

Cheerleading is a physical activity, sometimes a competitive sport, using organized routines, usually ranging from one to three minutes, which contain the components of tumbling, dance, jumps, cheers, and stunting to direct spectators of events to cheer on sports teams at games or to participate in competitions. The person involved is called a cheerleader. Cheerleading originated in the United States, and remains a predominantly American activity, with an estimated 1...

In vertebrates such as mammals the abdomen (belly) constitutes the part of the body between the thorax (chest) and pelvis. The region enclosed by the abdomen is termed the abdominal cavity. In arthropods it is the most distal section of the body which lies behind the thorax or cephalothorax. The human abdomen (also called the belly) is the part of the body between the pelvis and the thorax...