Bodyweight training is the hottest trending training type of 2016 and even though we now have access to gyms, people like to back to the old ways.
Bodyweight training is the best training source for extremely busy people an it will eliminate any excuses and make time irrelevant.
With bodyweight training it is easier to develop all the muscle fibres and to get in great shape. If you combine this with High Intensity Interval Training, you should have better than great results.
Bodyweight training will take a lot of discipline and time to master and it may not be for everyone.