Here are some very important tips on how to avoid injuries. Adhere to them and you should be able to train for a long time without suffering anything more that perhaps occasional minor injuries.
- Ensure you use immaculate exercise technique, never cheat, take shortcuts or use loose form.
- Ensure you stick to a smooth and controlled rep speed.
- Even if you feel your body can tolerate singles and very low-rep work, avoid using such high-force training for long periods, and use maximum-effort singles only very cautiously. If your body is not accustomed to singles and very low reps, stick to medium and high reps and use a rep counter for a given exercise that suits your body.
- It is true that no exercise is good for you if it hurts you. Therefore only use exercises which are appropriate for you, and where any modifications are required that you make them safe for you.