Making fitness part of a daily routine is one of the healthiest habits possible, but costs can add up fast. Running shoes, techie gadgets, yoga apparel and fitness classes can make it challenging to stay fit and maintain financial health at the same time.

But daily deal sites make that quest easier, and with offers to save 50% or more, it's possible to keep up with the latest trends, stay in shape, and avoid debt.

Most of these sites work like other daily deal programs such as Groupon and Living Social: Sign up to receive regular offers (when required), and act fast because most deals are only good for a limited amount of time.

Active GearUp: Launched by the fitness giant Active.com, Active GearUp offers deals on a variety of fitness products such as nutrition (protein bars and supplements), apparel (running shoes and compression socks), and gear (headlamps and GPS systems). Click on the deal and get redirected to the site where the product is sold or offered. I recently bought a pair of K-Swiss running shoes for $50 (regular price: $100). It's always a risk to buy running shoes online without trying them out first, but for that price I decided if they wouldn't work for running I would wear them at the gym. But after they arrived (in just a few days) I tried them out, loved them and have already worn them comfortably in a half-marathon.

Yogini Deals: Get daily offers for deals on apparel, gear, classes, massages, DVDs and more (including the popular P90X series).

OmDeals: Similar to Yogini, this site offers daily deals on yoga-related items (including classes), apparel, gear, and even retreats.

Caddiesbag: Golfers can find deep discounts on this daily deal site. Deals are posted daily at midnight and there is no signup. Simply check the site each day for the latest deal on golf equipment, apparel and more.

Groupenture: Everyone has a different definition of adventure. For some it involves wine tasting or sampling local cuisine. Others prefer cycling, rock climbing or snowboarding. This site offers deals on the type of adventure that could be on a bucket list (a trek through Nepal) at prices that continue to drop as more people purchase the deal.