The consequences of not hiring a (strength training) coach to save money: 1. You don't know your weaknesses and cannot perform targeted training to correct and improve them. You waste a lot of time doing some inefficient exercises. 2. Due to incorrect movements and not knowing the boundaries of risk, you push yourself too hard, which can easily lead to injuries, causing training interruptions for weeks, months, or even complete abandonment. Then you tell everyone that strength training is too dangerous and prone to injuries. 3. You cannot specifically tap into your potential. You end up stuck at a local optimum, unable to break through or make progress for years. If a person does not remain open and learn from outside experts, they will never realize how ignorant they are. 4. Without financial investment and supervision from a coach, it's easy to make excuses and relax your standards, leading to gradual neglect. 5. Without the ability to continuously increase weights and change exercises under a coach's guidance, your brain starts to become numb to training, and the secretion of growth hormones and other beneficial neurotransmitters for the body gradually decreases. The cognitive benefits of training also weaken. Strength training under a coach's guidance is a magic tool for brain health and anti-aging, surpassing all medications; those who train know this.