Fitness Components

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Across
  1. 4. Using heavier weights with fewer reps and taking your muscles to fatigue with each set improves what?
  2. 5. What improves the efficient delivery and uptake of oxygen to your body's systems?
Down
  1. 1. The greater the fat composition, the lighter the underwater weight refers too?
  2. 2. What can develop high levels of endurance in some muscle groups?
  3. 3. the range of motion you have around a given joint refers to what?