Hot answers tagged muscle
There's no easy answer. It depends on a few variables: The stress you've exposed your muscles to. How close you are to your genetic potential. How good your recovery is. You (probably, based on your fitness as explained) could do 20 pushups a day, every day, and have no problems. However if you tried to push your 1RM (single maximum effort) bench press, ...
It's called Delayed Onset Muscle Soreness (DOMS), but you'll note the Delayed word there. The pain usually shows up 24 hours later and is gone around 72 hours. It's actually not fully understood (2003 analysis in Sports Medicine): Up to six hypothesised theories have been proposed for the mechanism of DOMS, namely: lactic acid, muscle spasm, connective ...
I'd recommend doing abdominal rollouts: If you have the space you do them with a barbell (provided the weights can freely rotate), or you can pickup an "ab roller' like the one shown above. They are quite cheap (I picked mine up for ~$5), light and compact. Once kneeling rollouts become too easy, its a matter of progressing to standing rollouts:
Stretching doesn't build muscle. But it does have an important effect on your muscles that makes it useful both post workout and after any period of being still (sitting, sleeping, etc.). The muscle spindles are accustomed being at a "resting length". Say, if you sit in a chair for hours on end, your hamstrings become accustomed to being shortened. The ...
Progression in planks can take the form of added resistance, like you would with other muscles. AKA, add load. Weighted planks. Or weighted reverse planks. http://www.allthingsgym.com/wp-content/uploads/2013/08/Weighted-Reverse-Plank-Chinese-Weightlifting.jpg
I ran ambulances for a period, and also spent 3 years working primary ambulance response in an Air Force ER. The other answers are good but kind of need to be all combined, since for first responder type of ambulance work, the correct answer is that you need an overall body weightlifting and conditioning program. During a normal year, and depending on ...
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