Whether your training is getting tough, or you need some help getting started at the gym. Don't throw in the towel, take a look at these quotes for some fitness inspiration. They'll provide you with the motivation you need to keep going. 

Don't dream of winning. Train for it
Take care of your body. It's the only place you have to live. Jim Rohn
I hated every minute of training, but I said, "Don't quit. Suffer now and live the rest of your life as a champion." Muhammad Ali
If you have a body, you're an athlete. Bill Bowerman
Limitations only exist if you let them
The secret of getting ahead is getting started. Mark Twain
Fit is not a destination, it's a way of life
Know your limits and defy them
Everything you've ever wanted is one step outside your comfort zone
It's hard to beat a person that never gives up
Your mind will quit 100 times before your body ever does
You will never know your limits unless you push yourself to them
If it doesn't challenge you it doesn't change you. Fred Devito
Nobody who ever gave his best regretted it
If you can find a path with no obstacles, it probably doesn't lead anywhere. Frank A. Clark
Strive for progress, not for perfection
If you do what you've always done, you'll get what you've always gotten. Tony Robbins
It's not whether you get knocked down; it's whether you get up. Vince Lombardi