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  ______   _    _     _  __    _____      _____  
 /_   _// | || | ||  | |/ //  |  ___||   / ___// 
   | ||   | || | ||  | ' //   | ||__     \___ \\ 
  _| ||   | \\_/ ||  | . \\   | ||__     /    // 
 /__//     \____//   |_|\_\\  |_____||  /____//  
 `--`       `---`    `-` --`  `-----`  `-----`

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Text this: Evaluation of the user/operator stress using heart rate with machine learning algorithms