I'm soon turning 25. I'm failing in school, no motivation and no more money. How do I stay motivated?

Let's talk about three things: Bliss, controlling your thoughts and commitment:

Bliss-

How to Find Your Bliss: Joseph Campbell on What It Takes to Have a Fulfilling Life

Thoughts-

You are now and you will become what you choose to think about.

This has been the most important book of my life. It has guided me for 45 years. Written in 1910.

Listen several times to let it sink in, it is about an hour.

James Allen - As A Man Thinketh Audiobook

Commitment-

"Until one is committed, there is hesitancy, the chance to draw back, always ineffectiveness.

Concerning all acts of initiative (and creation), there is one elementary truth, the ignorance of which kills countless ideas and splendid plans:

That the moment one definitely commits oneself, then Providence (the protective care of God) moves too.

All sorts of things occur to help one that would never otherwise have occurred. A whole stream of events issues from the decision, raising in one's favour all manner of unforeseen incidents and meetings and material assistance, which no man could have dreamt would have come his way.

Whatever you can do, or dream you can, begin it.

Boldness has genius, power, and magic in it!"

-Goethe 1800


Is it advisable to do a gym in the morning with an empty stomach?

Depends upon what is our goal from going to the gym.If you want to develop a muscular body, with an emphasis on muscular size and strength, you should not go for fasted exercise (which means strength routines like lifting weights), because overnight you would be rendered into a

Is there a muscle in particular that grows the easiest or do all muscles grow at the same rate?

All muscles do not grow at the same rate, but this is mainly due to the purpose and size of these muscles and how we use them.Some muscles like our biceps are easily exercised and it shows rather fast if we exercise them. Something like

Do animals sweat?

In humans: fundamentally three types of sweating; mental, emotional and thermoregulatory...sometimes they occur together, sometimes not. With respect to animals, the situation is complicated because sweat gland function appears to serve the same object but in fact almost certainly does not. Thermoregulatory sweating in those animals which can be made to sweat in response