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These are the Worst Foods to Eat Before Exercising

Updated: Nov 25, 2020

Going in to a sweat session on empty can leave your energy levels depleted, you'll fail to get the most from your workout and might even feel completely exhausted when you finish rather than feeling that happy post-exercise pump. Our body requires the right kind of fuel to perform. While you know not to load up on cakes, pizza or champagne an hour or two before, there are some more surprising—even seemingly healthy—pre-workout foods that are equally not so great.

Which ingredients make the worst exercise fuel and what you should be eating instead?


While a diet rich in salads and veggies is normally great, raw greens like kale, spinach and broccoli can cause serious discomfort when you’re on the move. Thanks to their high fibre content, leafy green vegetables are almost guaranteed to cause abdominal distention—a.k.a. gas and bloating. If you’re in the mood for something light before your workout, swap a green salad for a green smoothie. Just mix your favourite fruit with 65g greens, water and some dried oats or granola. It'll go down way easier.


Your favourite athlete might guzzle bottles of energy drinks, but most brands on the market offer little nutrition—and way too much sugar. Sports drinks can offer some vitamins and electrolytes, but the high sugar content goes right through your system in the blink of an eye causing you to crash later on.

Instead, opt for a lower sodium tomato juice, which provides potassium, promotes healthy blood pressure, and may even help you stay hydrated thanks to its low sodium content.


There’s no doubt that beans are a great source of protein. But prepackaged hummus and bean dips often contain lots of added oil. Fuel up with a few bites of low fat cottage cheese, instead—it’s light, satisfying and protein rich, without all the oil.


While ordering the wholegrain version is usually a good move, it’s not when you’re about to workout. Carbs in general that are yeast and gluten bound are inflammatory, meaning they hold water and cause bloating. They’re providing you with energy because they’re a sugar, but the side effects far outweigh the benefits. Instead, opt for a plain, white tortilla that has less fibre and top it with a little nut butter and sliced banana for an extra kick of energy.


Grabbing a handful of raw seeds to nosh on pre-yoga might only leave you with bloat and stomach discomfort. It’s all because of their fat content, which can be limited when you combine them with other foods that are lower in fibre. Consider mixing just a teaspoon or two of your favourite seed with a half cup of porridge. The combination of fat, protein and carbs is the trifecta your body needs to perform at its best.


No one wants to push through a crampy, heartburn-inducing workout—and that’s the risk you run when you load up on last night’s Pad Thai or those jalapeno-flavoured crisps. Foods with that much flavour and seasoning require a great deal of digestion time, setting you up for a nap rather than a heavy workout. If you’re craving something bold and savoury, opt for some chicken or turkey, packed with protein and low in mostly everything else. Just remember to buy brands that have reduced sodium and little-to-no artificial additives.


Don’t be fooled by crafty marketing. Unless what you’re eating tastes like salmon, chicken or steak instead of biscuits or chocolate, chances are it’s loaded with sugar and fairy dusting of some kind.” If you’re looking for something on-the-go and a bar is all you can find, make sure it’s one that offers up at least a healthy 50-50 split of sugar and fat content. (Eat Natural's 'Protein Packed' Bar is a good option)

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