You should advertise your sports nutrition store in those places that have something to do with sports: the same fitness clubs, gyms, sports complexes and other institutions.
To minimize your advertising costs, you can agree with sports institutions on mutual advertising – they place your ads on their territory, and you place them in your store. It will be beneficial to both parties. Such advertising can cost you nothing at all.
If your store will not have regular customers, the chances for long-term success are small. Because of the narrow specialization of most of these stores live only through regular customers. So immediately develop an advertising strategy aimed precisely at how to get the base of regular customers. You can do this by introducing account cards that provide the opportunity to receive a discount on future purchases. This will encourage those who will have such a card to return to your store again and again to make purchases.
Also organize different promotions. For example, if your store is located in a sports complex and its range of oxygen cocktails, you can organize joint promotions. For example, every 3rd visitor to the sports complex gets a cocktail as a gift. Or altogether arrange a day of free cocktails. Of course, on such measures you will need to spend a certain amount of money, but if the effect of the action will be noticeable and the number of regular customers will increase, then you will quickly recoup all your investment in advertising.
People often trust their personal trainer when it comes to choosing sports nutrition. Therefore, try to establish contacts with the trainers of several of the most popular sports complexes, located near your store. They can advise their customers to buy products exactly in your store on certain terms of cooperation (for example, for this you will sell them sports nutrition with a personal discount).