20-40 mins depending on the person....but would not try it but...if you have to...slightly bend your knees to help your blood circulate..that would prevent you from passing out..
Answer:
Tobacco weakens the immune system.
Explanation:
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Answer:
Interval:
- Jog or walk at a more comfortable pace for three minutes.
- Sprint for 60 seconds.
- Perform five to ten cycles or continue until you've completed two or three miles. Total workout time will depend on your fitness level and running speed.
Circuit:
- Upper-body. Press-ups, Bench dips, Pull-ups, Medicine ball chest pass, Bench lift, Inclined press-up.
- Core & trunk. Sit-ups (lower abdominals), Stomach crunch (upper abdominals), Back extension chest rise.
Explanation:
Interval training is just varying the intensity on the same exact exercise, whereas circuit is a group of different exercises done in order.
