Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Weight-loss surgery may lead to alcohol abuse > Health-in-Motion Updated 17 September 2015 Abs right You're doing it wrong: When doing crunches, you're just lifting your shoulders off the ground and flexing your ab muscle (rectus abdominus) without engaging the waist or the lower abdomen (obliques and transverse abdominus). This could create a muscle imbalance which may result in back problems if you don't focus on your inner core muscles. Planking is a more beneficial alternative to crunches as it also works the transverse abdominus muscle (your core). 0 More: Daily Dose: Weight-loss surgery may lead to alcohol abuseHealth-in-Motion advertisement Other news News SEE: SA doctors perform second successful penis transplant Medical Mechanical heart valve noise may cause sleepless nights Medical SEE: How long the flu virus lasts in your body News Department of health continues to battle malaria in Mopani Lifestyle 4 secrets to combat ageing Diet and nutrition Stop the madness and back Noakes, begs online petition From our sponsors WIN a R2000 Skin Renewal voucher! Constipation in women SA's old diesel vehicles continue to fuel allergies Live healthier Dangerous winter sun » Why female students ignore the risks of indoor tanning Can rooibos protect you from the effects of UVB exposure? Skin cancer always a risk – even in winter During winter, the risk of skin cancer doesn’t disappear. CyberDoc talks to us about when to see your doctor about a strange-looking mole or spot. Did you know? » The 5 saltiest foods may surprise you Craving salt? Your genes may be the reason 10 fascinating facts about salt The one thing that fast foods, whether it be chips, hamburgers, pretzels or fried chicken have in common, is loads of salt.