Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Heart disease: a price humans pay for fertility? > 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 NEXT ON HEALTH24X How to build community with invention and creativity 3 minutes ago Partner content More: Daily Dose: Heart disease: a price humans pay for fertility?Health-in-Motion advertisement Other news Lifestyle SEE: 60% of SA teens have been drunk Mental health Doctors warn SA mental healthcare collapsing after Esidimeni News Health Challenge Week 47: How much do you know? Medical When is it safe to take opioids? Medical Link between eczema and heart disease disputed Medical Boozing makes your cells age faster From our sponsors WIN a R2000 Skin Renewal voucher! Constipation in women SA's old diesel vehicles continue to fuel allergies Complete our allergy survey and stand a chance to win R 1000! Live healthier Choose wisely... » Healthy diet may extend kidney patients' lives Healthy diet protects teens against later weight gain Finding the right diet for you With so many fad diets out there, it’s difficult to separate fact from fiction. Dietitian Mpho Tshukudu gives advice on how to find and follow the right diet. Decor danger! » Sick building syndrome FAQ: Sick building syndrome What is sick building syndrome? Your wallpaper might be making you sick Fungus growing on wallpaper might contribute to 'sick building syndrome', causing symptoms similar to flu and allergies.