Heavy Working sets with a rep range of 8-to-12 will lay more stress on the muscle fibers. This will in turn damage them more than opposed to a lighter weight with a high rep range of 15 reps. Your central nervous system comes into play and your whole body is activated.
Symptoms of Too Little Phosphorus. Hypophosphatemia occurs when phosphorus levels in your blood get too low. This causes your energy levels to drop, and can cause muscle weakness, fatigue, and a low tolerance for exercise.ymptoms of Too Little Phosphorus. Hypophosphatemia occurs when phosphorus levels in your blood get too low. This causes your energy levels to drop, and can cause muscle weakness, fatigue, and a low tolerance for exercise.
Why Your Potassium May Be Low. 1  1. Medication sides effect: Some medications for illnesses like asthma or emphysema can lower your Potassium levels. 2  2. Kidneyâs lose Potassium: For patients whoâve had a kidney transplant or disorder like tubular acidosis, kidney disorders can cause low Potassium levels. 3. Low Magnesium or Sodium: Both Magnesium and Sodium are important to aid the body in Potassium metabolizing. An inadequate intake of Magnesium or absorption issues in the body can produce low levels of Potassium.