At this stage you should be flying with your exercise programme. Remember, the only workout you will ever regret is the one you don't do.
Halfway through our 100FITdays challenge and you should be feeling stronger and seeing visible signs of all your hard work.
Also, very importantly, your core strength should be improving greatly. This is the basis of what all our muscles are built on, so a strong core will really help to improve stability, balance and posture.
The four exercises I have chosen for this week include Decline Push-up, Diamond Crunch, Jackknife and Jumping Squat.
We will be working chest and shoulders along with abs and core and also legs.
If you struggle with the Jackknife, try a simpler version with your knees bent and your feet flat on the floor instead of the legs straight.
Perform each exercise for 20 seconds then rest for 10 seconds before you move on to the next exercise and repeat. This completes one round. Aim for 8 sets, with a minimum of 5.
To see videos of Siobhan performing the exercises, and to get your bonus cardio video, sign up for the 100 FIT days daily email www.independent. ie/100fitsignup or read Yvonne’s daily blog in #100FITdays section of fitmagazine.ie