How do you do breaststroke legs?
Keeping this in consideration, what is breaststroke good for?
Breaststroke is a bit of a slow burner in terms of calories. Breaststroke is a much better cardiovascular workout than the other strokes. It helps strengthen heart and lungs while toning thighs, upper back, triceps, hamstrings and lower legs. It helps to work and tone the chest muscles.
Thereof, what muscles do you use in breaststroke?
Muscle groups engaged by Breaststroke Pectoral and Latissimus dorsi muscles are used to sweep the arms inwards against the water. Glutes and Quadriceps muscles power the breaststroke kick.
You could be right in your assumption that your breaststroke leg kick is not strong or powerful enough and that is the cause of your legs sinking as you swim. The power of the kick is vital for maintaining the movement and momentum of the stroke and the majority of the drive of the stroke should come from the leg kick.