marcy stationary bike LISS Cardio
http://b3.zcubes.com/v.aspx?mid=1566837&title=forget-best-indoor-spinner-bike-liss-cardio-10-reasons-why-you-no-longer-need-it
Even the best exercise bikes Liss cardio are somewhat less bulky than the usual treadmill or some crosstrainer, also so you'd swerve the journey to and out of the gym (time-efficient for those who have hectic schedules)