This is very useful for arms, very challenging and more when you try the shoulders!! It safe and nice to follow the routine in combination with the 8 Minutes Abs workout!
to be honest i dont do this, i preffer running, but now that is corona times, i guess is fine to try to do this after complete the 8 Minute Abs and Arms
This is a video that i normally use to exercise the abs, very challenging and safe!!
When you have enough condition, you can use a timer that repeats every 1 minute and do every minute per routine!
Is very usefull and do it every day for 30 days and will see the results