Ok, I found a few.
Fitness
Health is the vital principle of bliss, and exercise of health."
- James Thomson
The body of man is a machine which winds its own springs.
- J. O. De La Mettrie
Fitness - If it came in a bottle, everybody would have a great body.
- Cher
Those who do not find time for exercise will have to find time for illness.
- Earl of Derby
True enjoyment comes from activity of the mind and exercise of the body; the two are united.
- Alexander von Humboldt
A man's health can be judged by which he takes two at a time - pills or stairs.
- Joan Welsh
Motivational
To begin, begin.
- Peter Nivio Zarlenga
A good beginning makes a good end.
- English Proverb
Begin -- to begin is half the work, let half still remain; again begin this, and thou wilt have finished.
- Decimus Magnus Ausonius
The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind.
- William James
Bad excuses are worse than none.
- Thomas Fuller
Motivation is what gets you started. Habit is what keeps you going.
- Jim Ryun
What you have to do and the way you have to do it is incredibly simple. Whether you are willing to do it, that's another matter.
- Peter F. Drucker
Never let the fear of striking out get in your way.
- George Herman "Babe" Ruth
You cannot plough a field by turning it over in your mind.
- Unknown
Do not wait to strike until the iron is hot; but make it hot by striking.
- William B. Sprague
Perseverance is failing 9 times and succeeding the 10th.
- J. Andrews
Who bravely dares must sometimes risk a fall.
- Tobias George Smollett
Success is never final and failure never fatal. It's courage that counts.
- George F. Tilton
You win some, you lose some, and some get rained out, but you gotta suit up for them all.
- J. Askenberg
You've got to take the initiative and play your game. In a decisive set, confidence is the difference.
- Chris Evert
"There are no shortcuts to any place worth going."
- Beverly Sills
"If you don't have confidence, you'll always find a way not to win."
- Carl Lewis
"You only ever grow as a human being if you're outside your comfort zone."
- Percy Cerutty
"It is only through work and strife that either nation or individual moves on to greatness. The great man is always the man of mighty effort, and usually the man whom grinding need has trained to mighty effort."
- Theodore Roosevelt, in a speech about Grant, delivered at Galena, Illinois, April 27, 1900
"The turning point in the process of growing up is when you discover the core of strength within you that survives all hurt."
- Max Lerner
"Spirit ... has fifty times the strength and staying power of brawn and muscle."
- Unknown
"Continuous effort -- not strength or intelligence -- is the key to unlocking our potential."
- Liane Cardes
"If you train hard, you'll not only be hard, you'll be hard to beat."
- Herschel Walker
"Train, don't strain."
- Arthur Lydiard
"Number one is just to gain a passion for running. To love the morning, to love the trail, to love the pace on the track. And if some kid gets really good at it, that's cool too."
- Pat Tyson
"You would fain be victor at the Olympic games, you say. Yes, but weigh the conditions, weigh the consequences; then and then only, lay to your hand-if it be for your profit. You must live by rule, submit to diet, abstain from dainty meats, exercise your body perforce at stated hours, in heat or in cold; drink no cold water, nor, it may be, wine. In a word, you must surrender yourself wholly to your trainer, as though to a physician."
- Epictetus, (c.A.D. 50-c.A.D. 138)
"Just remember this: No one ever won the olive wreath with an impressive training diary."
- Marty Liquori
"The more I talk to athletes, the more convinced I become that the method of training is relatively unimportant. There are many ways to the top, and the training method you choose is just the one that suits you best. No, the important thing is the attitude of the athlete, the desire to get to the top."
- Herb Elliott
"Restlessness is discontent - and discontent is the first necessity of progress. Show me a thoroughly satisfied man - and I will show you a failure."
- Thomas Alva Edison
"The five S's of sports training are: stamina, speed, strength, skill, and spirit; but the greatest of these is spirit."
- Ken Doherty
"My jump was imperfect, my run-in was too short and my hands were too far back at takeoff. When I manage to iron out these faults, I am sure I can improve."
- Sergei Bubka (first pole vaulter to clear 20 feet)
Fall seven times, stand up eight.
- Japanese proverb
Only those who risk going to far can possibly find out how far one can go.
- T.S. Eliot
Daring ideas are like chessmen moved forward; they may be beaten, but they may start a winning game.
- Johann Wolfgang von Goethe
Man cannot discover new oceans unless he has the courage to lose sight of the shore.
- Andre Gide
Inspiration cannot be willed, though it can be wooed.
- Anthony Storr
Problems are only opportunities in work clothes.
- Henry J. Kaiser
Only he who can see the invisible can do the impossible.
- Frank L. Gaines
Nothing will work unless you do.
- John Wooden
Everything you want is out there waiting for you to ask. Everything you want also wants you. But you have to take action to get it.
- Jack Canfield
The difference between the impossible and the possible lies in a person's determination.
- Tommy Lasorda
