I currently do 20 minutes a day strength training using the apple fitness+ app and my watch. I use 5kg weights (started with 3kg). Is this too light? I ache after doing them and I feel that I am more toned and I'm getting better at push-ups etc. I have a shoulder injury so I am trying to build my strength back up on that side too. I have been cutting down to around 1200-1400 cals so I am hoping to lose weight too.
Currently 13 stone 5.8 and 5'6' height.