If you want to sell your own products (equipment, supplements, etc...), then you can make them available for online purchasing through your Store.
Before Getting Started: Ensure you have a Payment Integration active so you can accept online payments.
Step 1: Go to Services > Retail > click the '+' icon:
Step 2: Choose a New Product or Product with Options
Step 3: Fill in the product details
Step 4: Click Save
Your product can then be found by your clients through the Client Area or Mobile Apps for purchasing.