So the protagonist of today’s story is a guy called Mar and he simply loves taking up new challenges. One day, he learns about a local marathon happening in his town, and he decides to give it a shot. Mark has always been passionate about fitness, so this seems like the perfect opportunity to push himself further.

Mark starts training hard, running every morning and following a strict exercise routine. 

As days turn into weeks, Mark's enthusiasm and determination remain high. He runs for miles, visualizing himself crossing the finish line with a sense of accomplishment. However, after a while, he starts experiencing a few setbacks.

One day, Mark wakes up feeling tired and fatigued. He finds it difficult to muster the energy to go for his morning run. He wonders what's happening because he had been progressing so well until now.

Mark's friend, Sandra, who is also an experienced runner, notices his exhaustion and offers some advice. She tells him, "Hey Mark, it seems like you're running out of steam. Remember, even the most dedicated runners face these challenges. You need to listen to your body and take some rest.”

She says he is running out of steam. What does it mean to run out of steam? It means to lose energy, enthusiasm, or momentum in pursuing a task or goal. It's often used to describe situations when someone starts feeling tired or worn out, making it difficult to continue with the same level of effort.

Mark realizes that he has been pushing himself too hard without giving his body enough time to recover. He follows Sandra's advice and takes a couple of days off from his intense training routine to recharge his batteries.

During this break, Mark reflects on his progress and came to the conclusion that he had "hit a wall." It means to reach a point where progress becomes difficult or impossible due to physical or mental exhaustion. Mark realizes that he had hit a wall and needed to reassess his approach.

After his short break, Mark resumes his training but with a more balanced approach. He learns to listen to his body, adjusting his pace and setting realistic goals. Slowly, his energy returns, and he begins to enjoy running again.

So, in this story we have seen two expressions:
Run out of steam, which means to lose energy, enthusiasm, or momentum in pursuing a task or goal.

And the second one was hit a wall, which means reaching a point where progress becomes difficult or impossible due to physical or mental exhaustion.