If your pertaining to reps it would be 2 or more as my guess.
Answer:
macrophages in the spleen and liver
Explanation:
ANSWER: body experiences cold environment, body starts shivering, muscles start contracting, body raises the internal temperature
Answer: Cardio.
Explanation: Cardio is the exercise type that burns the most calories. Running, for example, is the top exercise of calorie-burn.
