In my experience the best results have come from training with a friend, colleague and generally someone who has similar goals to you. For me it’s definitely a must. There are plenty of reasons why this is the case and I have been seriously training for about 8 years now. I still have holidays from training and I enjoy food and wine as much as the next person but following the 80:20 rule for the majority of the time I have gained the biggest results by having a training partner.