The guys that played in 1972 were tough dude.
Players today wear helmets and masks and pay more attention to protection.
On the other hand, modern players are more complete athletes – they are faster, bigger and stronger.
On the left, Team Canada is stretching out prior to the 1972 Summit Series.
On the right, Team Russia players are stretching out before the game in Toronto at the 2016 World Cup of Hockey.
Of course, there are more requirements in jockey than pure physicality.
Character, mindset, intelligence and big heart are a must to propel to the super stardom.