, fatigue, overtraining and burnout. "Beginners - and even intermediate exercisers - should leave the gym thinking that they could have done more," says Kravitz.Once is enough The research is clear: for the average person, one set of an exercise is just

. If it doesn't vary, then you're falling into the classic trap of running your steady mileage too fast, a common problem in the motivated runner and a passport to overtraining and its associated doom and gloom.On a day when you're a little tired, you will find

. These injuries usually come after a burst of speed, and with a popping sound or sensation. Overtraining, forceful stretching, excessive speedwork or speedwork without a proper warm-up can strain a muscle. Strength imbalances also pose a threat. If the fronts

or you completed the suggested distance well within the time: If everything is going ‘too’ well, take care – try to hold yourself back for now to avoid the possibility of overtraining. Nonetheless, your new-found fitness might genuinely be better than

.How will it work? At 10am on the dates below, we'll set up a forum thread where you can pose your questions. The expert will then join us at 1pm and answer as many questions as possible before the debate closes at 2pm.MEET THE EXPERTS Overtraining: How much

after repeated stress or exercise without appropriate recovery between training sessions. The most serious form of MTSS is a stress fracture.Muscle trauma is often related to overtraining or excessive running on hard surfaces. The muscles swell, putting

, too often, you will wind up sick, injured or overtrained. Too little intensity and you will not achieve your potential in races. If you get the intensity wrong it doesn't matter if you are doing everything else right - you will not reach your full

. – Johnny JHow weighty are your weights?It depends on what strength training you do. An hour with toning weights isn't the same as a hardcore back session. A big back day will leave you on your knees. No way is that rest. It's dead easy to overtrain. – Stump

later) I suffered horrible cramps in both calves. I put this down to overtraining, so three weeks before my next marathon I eased down and did a lot of stretching. Despite this, I started cramping even sooner than before – at around 18 miles. I think I

. Cure Stop and stretch. Scientists are unsure of exactly what causes cramps, but it’s not as simple as electrolyte imbalances or dehydration.SHIN SPLINTS OuchYour shins are beyond sore. Science Pain is likely due to overtraining, wearing worn shoes