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.
No Complex Choreography. Barring any doctor's limitations, says Perlman, Zumba is safe for a range of ages and fitness levels because the steps can be modified so that it's very low-impact. And all you need are a good pair of dance shoes or cross-trainers. Part of Zumba's appeal is its simplicity, says Perlman.