I am a 44 year old male. I do weights on alternate days mostly for increased definition and some size increase. So far I feel I’m doing pretty well. I work out for about an hour. I use anywhere from 15 to 60 Lbs. I will increase weight if I can do the exercise well. On my alternate days I do aerobics. I use a rowing machine. I like the exercise because it’s demanding and provides upper body strenght training. My question is, is it wise to do rowing on non weight days? I’m concerned I’m not giving my upper body a chance to rest between weight training. I can use a treadmill for aerobics if I need to. I can also adjust the rowing machine so it doesn’t provide so much resistance. Thanks, Mike

I would try "high intensity interval training" (see wikipedia for more details and references). The newest treadmills on the market have the interval option built in where you can swap from the all out interval to the jog interval with the push of a button. (this can also be done on the rowing machine, bikes, steppers, etc.)

I’m assuming you’ve conditioned your cardiovascular system already, since this is not a type of workout to be done by unconditioned individuals. The benefits have been documented in scientific journals. HIIT burns more subcutaneous fat than conventional aerobic workouts and it stimulates the release of more growth hormone which will help increase your muscles mass, and thus stimulate your metabolism further.

Keep it up!

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