Theoretical vs. Actual Network Speeds. The performance of Wi-Fi networks practically never approach these theoretical maximums. 802.11b networks, for example, generally operate no faster than about 50 percent of theoretical peak, around 5.5 Mbps. Likewise, 802.11a and 802.11g networks generally run no faster than 20 Mbps.
It is not unusual to see aerobic dance and Zumba, a form of dance to Latin music, offered in neighborhood gyms and community centers. Both have similarities but some differences for participants.
A form of aerobic dance, Zumba began in the 1990s when Beto Perez, a Colombian dancer and fitness instructor, forgot his aerobic exercise music tapes and had to improvise with his dance music for a fitness class. The class was an instant hit with his students, and he later expanded his idea and classes to the U.S.