Are pushups a total body workout?

In pushups, primary work is to develop pectoral muscles and secondary it develops the strength of shoulders. In calisthenics their are many types of pushups like azetec,back clap and three clap etc they all need body coordination and explosive power to function . It vary from pushup to pushup that which movement are you functioning so according to me pushups is performed plyometric and in explosive way then it works on whole body .And if you are talking about simple pushup then it hits on pecs ,triceps and shoulders .

Do I really need to lift heavy weights?

Unless you are trying to turn pro as a body builder, strong man or athlete (think football), no you do not. Most people can skip the heavy weight/low rep routines and save their joints. The average gym goer simply wants to shed fat, tone up their body and

What is the speed of the Internet wifi that astronauts can use to connect with their personal gadgets on the ISS?

Slow... and slower!  When I returned to the International Space Station (ISS) with the STS-131 Discovery crew in April of 2010, social media had just begun to "take off" (good space reference, huh?!).  When I arrived I hoped to do some tweeting from space.  I tried to use the internet capability

What is the biggest misconception Indians have about the British Raj?

There are three misconceptions about British rule and all of them are equally big.They created the idea of India and united us into a nation. They actually followed the divide-and-rule policy which culminated in the formation of PakistanThey developed the country. On the contrary, they impoverished us and destroyed our economy. Before the British came, we were the world'