The only thing harder than Terry Funk’s legs are his arteries.

This quote is a humorous and metaphorical way of portraying the toughness and resilience of a person, in this case, Terry Funk. The speaker uses the hardness of Funk’s legs – presumably developed through rigorous physical training – as a comparison to his arteries. This could be interpreted as saying that Funk’s willpower, determination or stubbornness (symbolized by his ‘hard’ arteries) is even stronger than his physical strength.

In essence, it highlights the idea that mental toughness can surpass even great physical strength. It emphasizes how important mental fortitude is when facing challenges – not just in wrestling or sports but in life generally.

Applying this to today’s world or personal development, it underscores the importance of cultivating inner strength and resilience. In times when our physical abilities may be limited due to various circumstances such as ageing or illness, our mental toughness becomes crucial.

It encourages us to work on strengthening our mindset and developing an attitude of perseverance. Just like hardening muscles through exercise, we can also train our minds to withstand pressures and face difficulties head-on with courage and determination.

In personal development terms, it could mean continually challenging oneself mentally – stepping out of comfort zones, learning new skills or taking on difficult tasks – all aimed at making one’s ‘arteries’ harder; symbolically speaking.

So while maintaining physical health remains important for overall well-being; fostering psychological resilience might prove even more critical for long-term success in life’s many arenas from professional careers to personal relationships.