Provided herein in some embodiments is a resistance-training system including an upper-body garment having a first section of a single-layered construction and a second section of a multi-layered construction. The single-layered construction can include a first fabric layer. The multi-layered construction can include the first fabric layer, a second fabric layer, and a resistance-providing layer in-between the first fabric layer and the second fabric layer. The resistance-training system also includes a lower-body garment having the multi-layered construction, optionally with a different resistance-providing layer than the upper-body garment. The resistance-providing layer of the upper-body garment and the lower-body garment can be configured to provide resistance to one or more user movements for a user donning the resistance-training system.

A system includes a minimally intrusive display system (MIDS) configured to be disposed on an eyewear. The MIDS includes a display system and a sensor system configured to provide for a sensor data. The MIDS further includes a processor configured to process the sensor data to derive an activity metric. The processor is further configured to display, via the display system, the activity metric, wherein the display system is disposed in the eyewear so that the activity metric is only viewed when a user of the eyewear turns the user's pupil towards the display system at angle α from a forward direction.

Using aggregate activity data to generate a grade adjusted pace model is disclosed, including: receiving a plurality of activities; selecting a portion of the plurality of activities based at least in part on recorded heart rate information associated with the plurality of activities; and generating a Grade Adjusted Pace (GAP) model based at least in part on the selected portion of the plurality of activities.

This disclosure relates to using a hand held target (e.g. tae kwon do paddle) as a tool for providing physical performance instructions according to a digital workout performance template loaded in advance.

A submersible propeller that includes a battery and propellers in which: the propellers include a left propeller and a right propeller; front portions of the left propeller and the right propeller are connected to a waist-wearing power supply battery through a power supply cable for the left propeller and a power supply cable for the right propeller respectively. Rear portions of the left propeller and the right propeller are connected to a left angle controller and a right angle controller through a connection cable for the left angle controller and a connection cable for the right angle controller respectively. The left propeller and the left angle controller are symmetrically distributed left-and-right with respect to the right propeller and the right angle controller. By using angle controllers on the legs, various modes such as advancing, variable-speed advancing, retreating, turning, and in-situ spinning can be implemented.

According to one embodiment, an apparatus comprising a portable monitoring device to be affixed to a user. The portable monitoring device including: 1) a set of one or more sensors to generate sensor data indicative of physical activity of a user when the portable monitoring device is affixed to the user; and 2) processing circuitry coupled with the set of sensors, to detect that the user has been sedentary for a period of time, and cause the portable monitoring device to alert the user responsive to the detection to encourage the user to move.

A system and methods for custom-fitting golf clubs and golf club components is disclosed. Data is generated by a tracking device as a plurality of golf swings are performed by an individual. The data comprises motion and orientation information associated with a golf ball and with a golf club. The data is displayed using a graphical user interface. A plurality of shot characteristics is determined from the data. The shot characteristics are used to recommend golf clubs and golf club components that adjust a golfer's swing where the golfer exhibits the plurality of shot characteristics.

A carrying device with a built-in security system including a security unit 10 having components housed in an integral unit, where the components include a camera 1 with a light sensor 2; with a shatter proof clear cover 3 over the camera lens 16; a speed sensor 4; a distance sensor 9; a GPS tracker 8; a transponder 7 for sending and accepting digital data; a microcontroller 15, and a rechargeable power supply 5 in electrical communication with the microcontroller 15, the camera 1, the speed sensor 4, the distance sensor 9, the GPS tracker 8 and the transponder 7; to monitor the location and contents of the carrying device and to provide real time feedback to the user.

An electronic device includes a display, a memory configured to store priorities of sensors included in at least one of the electronic device and an external electronic device connected to the electronic device through a communication circuit, the priorities being set based on a type of exercise, a processor electrically connected to the display and the memory, and a connection interface configured to electrically connect the processor with the sensors. The processor is configured to select at least one first sensor of the sensors, based on the stored priorities of the sensors when the type of the exercise is designated, to designate the first sensor as an exercise measuring sensor that measures the exercise, to obtain first sensing data, based on the exercise, through the exercise measuring sensor, to analyze the first sensing data, and to provide exercise information based on the analyzed result of the first sensing data.

Methods, systems and devices for linking devices to tracking devices are provided. One method includes scanning, by an activity tracking device, for a semi-unique identifier broadcasted by a device. The method connects the device with the activity tracking device after the semi-unique identifier is found to be of the device by the activity tracking device. The activity tracking device is configured to communicate with the device to obtain device identification (ID) of the device. The method then automatically links the device to the activity tracking device when the device ID of the device matches a copy of the device ID stored in the activity tracking device. In one example, the tracking devices operate as a master and the devices operate as a slave.