text: var slider = document.getElementById("myRange");
  var output = document.getElementById("demo");
  
  
  output.innerHTML = slider.value + " Flexiones";
  
  
  slider.oninput = function() {
    output.innerHTML = this.value + " Flexiones";
   
  }
  
  var miR = document.getElementById("miRango");
  var salida = document.getElementById("valor");
  
  salida.innerHTML = miR.value + " Sentadillas";
  
  miR.oninput = function() {
    salida.innerHTML = this.value + " Sentadillas";
  
  }
  
  var rangoDominada = document.getElementById("recta");
  var salir = document.getElementById("salida");
  salir.innerHTML = rangoDominada.value+" Dominadas";
  
  rangoDominada.oninput = function() {
    salir.innerHTML = this.value+" Dominadas";
  }