You underestimate your bodies strength. There are people of 98 years that do a full triathlon, so there is no excuse for you not to able to do that. You can do anything when you put your 10k hours in, but not on the first try.
If mountain biking is your dream buy a Trek with electric motor in it. They can give you extra lift till you accelerate to 75 km/hour with a dongle of $120. Instant pro biking experience without much practicing.
You are too young to accept any physical limitations of your body. Navy Seals talk about that being tired is just an emotion like feeling happy. Its all about your mindset.
If mountain biking is your dream buy a Trek with electric motor in it. They can give you extra lift till you accelerate to 75 km/hour with a dongle of $120. Instant pro biking experience without much practicing.
You are too young to accept any physical limitations of your body. Navy Seals talk about that being tired is just an emotion like feeling happy. Its all about your mindset.