Device and methods for improved resistance training

An exercise device comprising:

• a body having a first end and a second end, wherein the first end is configured to receive a handle attachment;
• a first connection component disposed at the second end of the body and configured to attach the exercise device to a first resistance component,
• a sensor coupled to the first connection component;
• a processing circuit disposed in the body of the exercise device communicatively coupled to the sensor;
• and
• a rotatable display communicatively coupled to the processing circuit and configured to rotate along one or more axes and display information based on an output of the sensor,
• wherein the processing circuit is programmed to:
• detect a change in force during a movement of the exercise device;
• subtract a hysteresis value from a target force once a detected force equals the target force;
• while the detected force is above the target force less the hysteresis value, increment a time-under-tension clock;
• and
• in response to detecting that the detected force falls below the target force less the hysteresis value, stop the time-under-tension clock.