A treadmill, comprising: a deck (112, 12) supporting a belt, a first post extending from the deck: a second post extending from the deck opposite the first post a first arm supported by the first post; a first rotary control disposed on the first arm, the first rotary control including an inner portion, a detent a first substantially horizontal central axis, and an outer portion rotatable relative to the inner portion about the first central axis, the detent being configured to provide tactile feedback to a user of the treadmill as the user rotates the outer portion about the first central axis; a second arm opposite the first arm and supported by the second post; a second rotary control disposed on the second arm and separate from the first rotary control, wherein: the first rotary control is configured to control a first function of the treadmill and the second rotary control is configured to control a second function of the treadmill different from the first function, the outer portion of the first rotary control includes an indicator configured such that rotation of the outer portion results in commensurate temporary illumination of at least part of the indicator, the commensurate temporary illumination being indicative of an extent of rotation of the outer portion about the first central axis, and the inner portion of the first rotary control includes an input device configured to control a third function of the treadmill different from the first function and the second function. a deck (112, 12) supporting a belt, a first post extending from the deck: a second post extending from the deck opposite the first post a first arm supported by the first post; a first rotary control disposed on the first arm, the first rotary control including an inner portion, a detent a first substantially horizontal central axis, and an outer portion rotatable relative to the inner portion about the first central axis, the detent being configured to provide tactile feedback to a user of the treadmill as the user rotates the outer portion about the first central axis; a second arm opposite the first arm and supported by the second post; a second rotary control disposed on the second arm and separate from the first rotary control, wherein: the first rotary control is configured to control a first function of the treadmill and the second rotary control is configured to control a second function of the treadmill different from the first function, the outer portion of the first rotary control includes an indicator configured such that rotation of the outer portion results in commensurate temporary illumination of at least part of the indicator, the commensurate temporary illumination being indicative of an extent of rotation of the outer portion about the first central axis, and the inner portion of the first rotary control includes an input device configured to control a third function of the treadmill different from the first function and the second function. a second post extending from the deck opposite the first post a first arm supported by the first post; a first rotary control disposed on the first arm, the first rotary control including an inner portion, a detent a first substantially horizontal central axis, and an outer portion rotatable relative to the inner portion about the first central axis, the detent being configured to provide tactile feedback to a user of the treadmill as the user rotates the outer portion about the first central axis; a second arm opposite the first arm and supported by the second post; a second rotary control disposed on the second arm and separate from the first rotary control, wherein: the first rotary control is configured to control a first function of the treadmill and the second rotary control is configured to control a second function of the treadmill different from the first function, the outer portion of the first rotary control includes an indicator configured such that rotation of the outer portion results in commensurate temporary illumination of at least part of the indicator, the commensurate temporary illumination being indicative of an extent of rotation of the outer portion about the first central axis, and the inner portion of the first rotary control includes an input device configured to control a third function of the treadmill different from the first function and the second function. the first rotary control is configured to control a first function of the treadmill and the second rotary control is configured to control a second function of the treadmill different from the first function, the outer portion of the first rotary control includes an indicator configured such that rotation of the outer portion results in commensurate temporary illumination of at least part of the indicator, the commensurate temporary illumination being indicative of an extent of rotation of the outer portion about the first central axis, and the inner portion of the first rotary control includes an input device configured to control a third function of the treadmill different from the first function and the second function.