boxing.rb

def start
  puts "Starting round #{@rounds + 1}"
  say('start', 5)
  3.times do |minute|
    sleep 60
    say("Ending minute #{minute + 1}")
  end
  @rounds += 1
end

def rest
  say('rest', 5)
  sleep 60
end

def say(what, times = 1)
  `say #{([what] * times).join(" ")}`  
end

say("Starting in 5 seconds")
sleep 5

trap("INT") do 
  puts "That was #{@rounds} rounds"
  exit!
end

@rounds = 0
loop do
  start
  rest
end