Fist clenching can boost your memory, suggests a new study on memory. It works because clenching your fist can change the way your brain functions by increase activity in your brain on the opposite side (so if you clench your right fist, activity in the left brain hemisphere increases). If you’re right-handed, the left side of your brain encodes information while the right side helps you retrieve memories, while the opposite is true for left-handed people. This is how to utilise this memory aid: if you’re right-handed you would make a fist with your right hand when you want to remember something, ie a name, fact or number and when you need to recall it, clench your left fist. Other ways to boost memory include: exercise, vitamin B12, animal-based omega-3 fats, proper sleep, and optimising your vitamin D levels and avoiding sugar which can damage your memory and learning.