The correct answer is the left atrium receives the newly oxygenated blood.
Being underweight can contribute to a very frail and weakened immune system. It can make one feel tired mentally. And can also affect the bones by making them very brittle and frail sometimes.
Answer: The answer to your question would be 4-6 reps, 1 set.
A consequence you may suffer is an injury. Exercising without stretching can cause injury.
1 I think this is the right answer
