MTB is a bicycle designed for off-road cycling. Mountain trails, fire roads, logging roads, single track and other unpaved environments. MTB are types of multi terrain bicycle. Mountain bikes are built to handle terrain and the obstacles that are found in logs, vertical drop offs, and smaller boulders. MTB bikes use 27.5-inch or 29 inch. wheels and come in a variety of widths, ranging from standard rims suitable for use with tires in the 26 in x 1.90 in to 2.10 in (559 x 48 to 53 mm) size, to 2.35 and 3.00 in (60 and 76 mm) widths.

So if you are in the mood for an off-road adventure, want to lose weight and increase stamina go for MTB.