anabolic steroids
The basis for strength training is to increase the person's ability to lift heavier objects.
some times the athletes hurt them selves and they have to take steroids to get better
Core training
Assuming that you are eating properly and using a good strength training program, strength training will increase your muscle mass. Just look at champion bodybuilders, especially champion natural bodybuilders: they all became more muscular by doing strength training.
You do not increase the length of your muscles with weight training, just their strength and for a man, their bulk.
Resistance training, often known as strength training or weight training, involves applying resistance to muscular contraction to increase skeletal muscle size, anaerobic capacity, and strength.
Weight training does not cause aggressiveness, however many weight lifters who are unsatisfied with the results end up turning to steroids. Steroids CAN cause aggressiveness, health problems and even sexual disfunction. However the men who use steroids will deny that.
Yes, dumbbells are a good source for strength training. For strength training you will need to work on less reps with more weight and slowly increase that over time.
Core training
Dumbbells are handheld weights used in strength training to build muscle and increase strength. They are versatile and can be used for a variety of exercises targeting different muscle groups.
Incorporating barbell rows for biceps into a strength training routine can help increase bicep strength and muscle mass, improve overall upper body strength, and enhance grip strength.
Using a row pull machine for strength training can help improve back and arm muscles, increase overall strength and endurance, and enhance posture and stability.