I'm not naturally flexible. I only started stretching a few years ago. So, how is this possible? Here's the thing. Everybody knows that to build muscle, you need to hit the gym, push your limits, drink your protein, recover, and repeat. But for flexibility, people assume that you're either born with it or need to start stretching as a kid. Here, I'm talking about real flexibility, like bridges and splits, not just touching your toes. However, science proves that muscles adapt to training at any age. This is why even people in their 80s should be lifting weights and stretching even if they have never done it before. So if you want to get flexible using modern science, not tradition and praying to the flexibility gods, here's the framework that I use. Science says that your muscles can't be the best at everything. They adapt the most to the activity they experience the most. So if flexibility is your main goal, make sure that it is the biggest part of your training. Stretch three to five times per week for at least 15 minutes. More time equals better results. So if you want a needle, you'll need way more than 3 * 15 minutes per week. Flexibility comes from neuromuscular psychological and physiological adaptation. This is why 60 seconds in a 95% stretch is better than 10 seconds in 110%. Injuries will set you back more than bad training. Therefore, always warm up until you're sweating. And if you're sore after training, you have done it right. Just make sure you don't train with sore muscles for more than 10 to 30% of the