In our lives, we partake in common activities such as lighting a summer party with candles or wearing shoes that happen to harm our bodies without our knowledge.

We do these activities so often that we don’t realize the harm their products may cause. Here are a list of activities that may need a second look-over if you do them excessively:

Carrying heaving bags

As college students, we’ve worn backpacks, heavy purses or some form of heavy bags to transport our belongings. Unfortunately, carrying around these heavy bags can have negative effects on your lower back, according to everydayhealth.com. Because we use bags so often, a good way to lessen the weight of the bag is to condense what you put in it. It also helps to use a backpack with thick straps and buy a backpack with two straps, not one.

Burning candles

During the summer, we tend to use candles more to light outdoor parties, dark rooms and for use of calming. Most people enjoy the smell and aura of a burning candle. While that candle might be creating a charming smell, it might be doing us more harm than good. There are scented candles that can release many harmful chemicals into the air, according to huffingtonpost.com. This can cause damage to the lungs and brain in some cases. Studies have found that non-scented, vegetable based candles are the least harmful.

Wearing flip-flops

Flip-flops are almost everyone’s shoe choice in the warmer months due to their practicality. While flip-flops are a popular choice of footwear in the summer, there is a lack of support for your feet when you wear them. Since there is no arch in the shoe to support our natural arch, wearers can suffer from foot pain, according to webmd.com. While flip-flops give you the protection you need when walking around, there is no way to fix the lack of support they give you. So, it might be time to find a different favorite summer shoe if you use flip-flops regularly.

Using humidifiers

Humidifiers are more common in colder conditions because they add help to prevent the air from being dry. If you don’t keep your humidifier adjusted to a good level, the use of a humidifier can backfire, according to mercola.com. If the adjusted level is too high, mold and fungus have an easy ground to start growing on. When using a humidifier, there are tools at hardware stores that can help you measure the amount of moisture in the air.