For checking the transcript: https://www.buzzsprout.com/2379282
Blood, sweat, and tears
means putting in extreme effort, hard work, and dedication to achieve something challenging.
Examples:
1- Nelson Mandela dedicated his life to ending apartheid with blood, sweat, and tears, spending 27 years in prison for his cause.
2- My mom put blood, sweat, and tears into cooking Thanksgiving dinner—then we finished eating it in 20 minutes!
