I was watching Jordon Yeoh's FB's video Side To Side Pushups yesterday. So, I gave it a try :)
Anyone that has busy schedule but like to stay healthy and fit should seriously look into Tabata because it only takes about 20-30 minutes for each workout session. Learn more about Tabata http://fitness.mercola.com/sites/fitness/archive/2013/04/12/tabata-workout.aspx