Can the Heart/Lungs Be Overtrained?

Can you overtrain your aerobic systems? If so, how much rest do they require? (Granted, that depends on the length and intensity of the workout…say hour-long high-intensity cardio sessions).

I just started Marine Corps PT (through my university) and we have it 3-4 times per week. I’m just trying to figure out if i can add in some cardio work on the side, or if i should stick with some light walking (active recovery) between sessions.

Short answer: yes, there is such a thing as aerobic overtraining, but you can add plenty to USMC PT without overtraining. If you’re in ROTC, I would even recommend it, or Quantico will kick your ass.

Yea adding cardio to your PT shouldnt be a problem. running 5 miles in the morning plus some PT training everyday shouldnt kill your lungs, assuming you kinda know what you are doing.

A lot depends on what exactly “Marine Corps PT” consists of.

from Charles Poliqiun
If you want your cortisol under control, stay away from excessive cardiovascular work. I’m utterly convinced that if gym rats cut down on cardio, they’d be leaner. Humans aren’t aerobic animals. We’re designed to throw a rock or spear at the prey; not run six miles to get the food. Aerobics works only for about six weeks. Once the enzymatic response is maximal, you’re wasting your time. It’s a myth that cardio burns bodyfat only. That’s based on antiquated studies that couldn’t measure all fuels contributing to exercise. Amino acids have been underestimated for the longest time as fuel sources for cardiovascular exercise. Cardio burns not only fat but muscle as well.

I swam like 4 hours/day 16,000 yds daily for years on competitive team. I doubt most people overtrain their C/V system.

Also don’t agree with Poliquin statement. We have long bipedal stride, millions of sweat glands to cool down, not very speedy or strong compared to animals, big glutes, efficient walking or long distance biomechanics.

We’re made to invent the car.

The heart and breathing muscles never rest. Don’t worry about overtraining them. Your legs are another story.