4 min/ mile

• Consider


  To judge, believe, or think

  Many people consider Abraham Lincoln to be the best US. president.
• Doubter


  People who do not believe something is true or possible
• Barrier


  An obstacle or something that stands in the way of something else
• Regimen


  A regimen is a planned system of diet, behavior, or study in order to reach a goal
• Convinced


  Completely certain of something
• psychological 


  Mental or having to do with the mind and feelings
• Endurance


  Ability to do sth for a long time. Most people do not have the endurance to run the 26 miles of a marathon race
• Accomplished


  Succeeded in doing sth

  After knitting a scarf, Sarah was proud of what she accomplished
• Feat


  An act that takes strength, skill, or courage to do

  Lifing 500 pounds would be a feat for most people
• individual 


  Human being 

  There are five individuals on my basketball team.
• Throughout


  All through a certain time or every part of sth

  I could hear the birds chirping throughout the morning; they did not stop until the afternoon