Exercise improves that. Here's a bunch of literature.
https://www.health.harvard.edu/mind-and-mood/more-evidence-t...
https://pubmed.ncbi.nlm.nih.gov/22933142/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470658/
Regardless, exercise isn't the core method to weight loss, that's change of diet.
> As you can see from his requests he's looking for some serious luck
No, I disagree.
OP said:
>I am constantly worried that ...
Op's request cannot be solved through fulfillment of their apparent presentation. Look at what is behind them.
Worry is a state of mind. Even if they were fulfilled to YOUR satisfaction, worry could still exist in someone else's mind in the exact same position. Worry, OP stated, is their core problem.
“Man is not worried by real problems so much as by his imagined anxieties about real problems”
― Epictetus