Being injured can often be a huge blow mentally and physically. Injuries can range immensely from strains to fractures and can have a huge range of affects from bruising, swelling, cuts and surgery.
This is why it is important to monitor your training appropriately to prevent long term injuries happening.
Stretching is so important when it comes to keeping up with a good training routine and ensuring you don't get injured.
I always recommend clients so dynamic based stretches as part of their warm up to increase blood flow, mentally prepare themselves for the training they're about to do, and some movement patterns that are likely going to be part of the exercise they're about to do.
Now that races are starting to make a slow reappearance in the calendar, training is starting to feel like it has a purpose again, other than stress relief.