Well, it is played on the same sized pitch as 15-a-side, which means that there is a lot more space for players to use. Players have more opportunity to run, pass, kick, tackle, communicate and make decisions than in the full game and often in a fraction of the time.
In his 2006 book, “Coaching Rugby 7s”, Marcus Blackburn (ex-Sevens international player and coach) says:
“The traditional approach to coaching Sevens was to pick the most talented individuals and rely on their brilliance and spontaneity to score tries, and selection was perhaps a bigger concern than the actual preparation of the team. However, this is no longer the case; now the team that is the most organised and best prepared collectively will most often be the winning team.”
What is still true is that with only 14 players on the full sized pitch, players must have high levels of basic skills in catching, passing and running as otherwise they will be quickly exposed.
Coaches would be advised therefore to ensure that Sevens training sessions include a high level of game related decision-making and basic skills in pressured situations.